e****o 发帖数: 3844 | 1 下面简单举几个毛例子说明下对比~
幼年 vs 成年
毛豆姓名:小五家后院的的白尾鹿(white-tailed deer) by keah
幼年:小鹿斑比,北美的白尾鹿一般出生于春季(五月到六月),身上的白色斑点一般
会在第一个夏天之后褪去
成年:斑点褪去,毛色为红棕色或淡灰色
(文字是我随便写的,大概就是简要描述一下啦~精彩的图片copy自keah的帖子 “艰难
的婆媳关系”)
http://www.mitbbs.com/article_t2/Animals/148991.html
雄性 vs 雌性
毛豆姓名: Eastern Tailed Blue by Fraxinus
左边是公的,右边是母的
判断蝴蝶公母的基本办法有
1.看颜色。有不少蝴蝶的公母的颜色差很多,就Eastern Tailed Blue来说,公的正面
是蓝色的,母的是褐色的。
2.看生殖器。蝴蝶的腹部分9节,雌蝶的生殖孔是在第8节,图中右边那只就是这样的。
3.这种蝴蝶属于灰蝶科,灰蝶科的蝴蝶有一个简单的方法分公母——看脚趾。公的灰蝶
前面第一对足退化,是没有脚趾的;雌蝶则正常,六只脚都有完整的脚趾。
(以上... 阅读全帖 |
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l*t 发帖数: 10829 | 2 你的眼神真好. 刚查过一些老美的近期报告,这里现在较容易看见White-tailed Hawk和
Red-tailed Hawk. 这只确实是White-tailed Hawk. 啥时能瞧得近就好了.
这个地方,据说冬天会有Bald Eagle路过 |
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P*****J 发帖数: 1745 | 3 看细节特征的话,Red-tailed Hawk有两个主要的。一个是腹部的横带,一个是两翼前
缘的黑带。对比之下,Broad-winged Hawk的未成鸟腹部都连成一片了,没有名显的带
子,翼前缘也没有黑带。
泛泛的讲,看鹰,飞行姿态,翅膀角度,身体比例等各个方面都可以作为识别的依据。
就算只能看到剪影照,Broad-winged Hawk翼尖的羽毛(primary feathers)是并拢的,
而Red-tailed Hawk翼尖羽毛是分开呈五指状的。对比一下砖头照的Broad-winged Hawk
和我在网上找的Red-tailed Hawk,这点区别再明显不过了。
我附近没有猛禽迁徙的热门聚集地,平时一般就看得到单个或成对的几种常见猛禽,所
以我认鹰的水平十分有限。砖头你那里有那么多鹰经过,总去看的话,一来二去很快就
能成为认鹰高手。 |
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T******n 发帖数: 42 | 4 half moon真好看啊,crown tail也不错.不喜欢veil tail的和double tail的。 野生类
的斗鱼红战狗很竞艳的。 |
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h*h 发帖数: 18873 | 5 个头不小:
Cougars are slender and agile members of the cat family. They are the fourth
-largest cat;[30] adults stand about 60 to 90 cm (24 to 35 in) tall at the
shoulders.[31] Adult males are around 2.4 m (7.9 ft) long nose-to-tail and
females average 2.05 m (6.7 ft), with overall ranges between 1.5 to 2.75 m (
4.9 to 9.0 ft) nose to tail suggested for the species in general.[32][33] Of
this length, 63 to 95 cm (25 to 37 in) is comprised by the tail.[34] Males
typically weigh 53 to 100 kg (115 to 2... 阅读全帖 |
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h*****t 发帖数: 6890 | 6
谢谢。最近拍得不多,拍的主要是 red-tailed hawk 和 northern harrier hawk.
1. juvenile red-tailed hawk siblings
2. female northern harrier
3. juvenile red-tailed hawk
4.house wren
5. eastern phoebe
6. little blue heron |
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h*****t 发帖数: 6890 | 7 在2015年一开始就打到 eastern meadowlark,这鸟的倩影我曾在去年11月远远的见过
就念念不忘,在1月17日终于打到。当时我在一片靠海的结了薄冰的沼泽地上追一只
northern harrier。Harrier hawk 翅膀一展飞到一边,把我甩在后面有50多米远,我
扛着大炮,气喘唏唏的追到30米远,放下大炮瞄向 Harrier hawk 时,它又飞远了。这
样来回两三个回合,我有点累,正在歇一会时,有一只小鸟从我身后飞过,浅棕色的羽
毛,那小鸟落地后就在草丛里找食,接着又飞来几只。我拿起望远镜一看,正是
eastern meadowlark。这下我放下 Harrier 不管了,一心跟拍 meadowlark。我放低脚
架,单腿跪在地上,拍了几张,然后保持跪着姿式等 meadowlark 向我走近,可惜我跪
得腿都麻了,它们都没向我走过来,反而越走越远,我不耐烦,站了起来搬着大炮向
meadowlark 们挪去,把它们吓跑了。于是,跟追 northern Harrier 的情景一样,我
在地上追,鸟儿在天上飞,来回几个回来,终于把我累跨了。
1. eastern m... 阅读全帖 |
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T******g 发帖数: 21328 | 8 LSD:
Quote:
Originally Posted by me
A few points because I think others have confused a few issues here.
The Torsen I used in 94 and I think some 95s is the original worm gear
design that every one loved. The Torsen II used in I think later 95 through
basically now (the later used a dif with a different name but it was the
same basic design) is a Quaife type helix LSD. The torque sensing name came
from the Torsen I dif which developed locking based on the torque applied to
the wheels, not based ... 阅读全帖 |
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w*******y 发帖数: 60932 | 9 MSR Evo Snow Shoes (22-Inch, Navy):
http://www.amazon.com/MSR-Snow-Shoes-22-Inch-Navy/dp/B003EFF6MA
Free one-day shipping with Discover card.
5 stars on Amazon
The Evo Snowshoes from MSR's Trek Line are built for smooth, secure, and
efficient footing over rolling terrain--with many of the same top-of-the-
line features found on MSR's most aggressive snowshoes. With same UniBody(TM
) Traction foundation found on the incline-oriented MSR Ascent Line, the Evo
Trek Snowshoes provide the confident tr... 阅读全帖 |
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c**i 发帖数: 6973 | 11 (1) 史蒂文•萨克尔, 记者来鸿:中国人来澳洲“淘金”的影响. BBC Chinese,
Apr 20, 2011.
http://www.bbc.co.uk/zhongwen/simp/world
/2011/04/110420_fooc_china_australia.shtml
The above is translated from
Stepehn Sackur, Australian resources key to booming China. BBC, Apr 12, 2011
("In Perth, Australia's mining capital, there are signs of a bubble economy.
Restaurants and farms are struggling to find labour as unskilled workers
flock to the mines, where the average annual wage is $108,000 (£69,000
). A truck driver... 阅读全帖 |
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s*******e 发帖数: 144 | 12 好了,我来分析一下为什麽五毛狗们都是文科傻妞出身吧。最重要的是要搞清楚我们在
讨论什麽。我们讨论的核心是根据这十八个漠视路人的表现,对国人的道德水准可以作
个什麽推论:是道德败坏更可能,还是道德高尚更可能。
用硬币来比喻,如果连抛十八次硬币都得到head, 我们对硬币的结构可以作个什麽推论
:是两面都是head更可能,还是一面是head另一面是tail更可能。
这麽简单的问题,可是看看五毛狗就是不能理解。五毛狗怎麽看问题呢?先假定硬币肯
定是一面head另一面tail, 再来抛硬币算概率。这难道不是因果倒置主次不分强词夺理
一味狡辩愚不可及人神共愤吗? |
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s*******e 发帖数: 144 | 13 好了,我来分析一下为什麽五毛狗们都是文科傻妞出身吧。最重要的是要搞清楚我们在
讨论什麽。我们讨论的核心是根据这十八个漠视路人的表现,对国人的道德水准可以作
个什麽推论:是道德败坏更可能,还是道德高尚更可能。
用硬币来比喻,如果连抛十八次硬币都得到head, 我们对硬币的结构可以作个什麽推论
:是两面都是head更可能,还是一面是head另一面是tail更可能。
这麽简单的问题,可是看看五毛狗就是不能理解。五毛狗怎麽看问题呢?先假定硬币肯
定是一面head另一面tail, 再来抛硬币算概率。这难道不是因果倒置主次不分强词夺理
一味狡辩愚不可及人神共愤吗?
发信人: structure (structure), 信区: Military
标 题: 你说五毛狗的脑子都是咋长的?
发信站: BBS 未名空间站 (Mon Oct 17 21:46:40 2011, 美东)
瞧这位,这概率学的?真令人啧啧称奇。都是爹妈所生,人和人咋差别就这麽大呢?
莫不成五毛狗都是文科傻妞?
我知道我知道,文科生又没惹我,我道歉我道歉。只是实在不知道五毛狗到底属于何类
生物物种。 |
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D*V 发帖数: 3096 | 14 (07-07) 15:03 PDT SAN FRANCISCO -- An autopsy was being conducted Sunday to
determine whether one of the two teenaged passengers killed on the Asiana
Airlines flight had been run over by a San Francisco fire rig at the crash
scene.
The 16-year-old girl was found near the evacuation slide near the left wing
of Asiana Flight 214 which crashed Saturday during a landing at San
Francisco International Airport. The girl was not identified.
San Francisco Fire Chief Joanne Hayes-White said Sunday her in... 阅读全帖 |
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c****s 发帖数: 5892 | 15 珍妮特(Janet)周五晚上打开家中洗衣机准备取出一些衣物,万料不到机内竟蜷伏着一条皇室蟒(Royal Python)。她尖声叫道:「又多来一条蛇!」
那已是珍妮特及丈夫福德(Chris Forde)两周内在家中发现的第二条蟒蛇。
珍妮特周六在葛士维大道(Coxwell Ave.)夹丹福夫大道(Danforth Ave.)寓所内向《多伦多星报》(Toronto Star)表示:「雷击只会在同一地方出现一次,但昨晚已出现了第二次,稍后更有可能多出现3或4次。」
宠物店一名僱员告诉福德夫妇,他们很大可能在不久之后再次见到更多蟒蛇在家中出现。
这宗蟒蛇事件大约1个月前开始,当其时福德将主层洗手间的马桶拆掉,准备进行一些装修工程。福德提到一条蟒蛇从地板罅隙走出来时表示:「蛇头突然弹出来。」本身是纪录片制作人的福德迅速将蟒蛇出来一刻拍录下来,该条蟒蛇其后退回地板下面。尽管福德之后拆掉土库的天花板,并且利用死老鼠及热水樽设置陷阱,但蟒蛇一直未见出现。
珍妮特(Janet)周五晚上在家中洗衣机内发现一条蟒蛇。
福德夫妇已在该处居住了20年,最近则有意将房屋出售。蟒蛇这个不速之客的出现,阻碍了他们的卖... 阅读全帖 |
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e****i 发帖数: 2152 | 16 【 以下文字转载自 Military 讨论区 】
发信人: erkuai (三天不上bbs,赶得上刘少奇), 信区: Military
标 题: On the Jews and Their Lies, 1543
发信站: BBS 未名空间站 (Wed Jan 12 23:21:23 2011, 美东)
by Martin Luther (1483-1546)
Translated by Martin H. Bertram
copyright © 1971 Fortress Press & Augsburg Fortress - On the Jews and
Their Lies is from Luther’s Works Volume 47. Augsburg Fortress is the
publishing ministry of the Evangelical Lutheran Church in America.
Funded through sales revenue, Augsburg Fortress is called to provide
produ... 阅读全帖 |
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y****i 发帖数: 1050 | 17 On Midway Island, the USAAF stationed four squadrons of B-17 Flying
Fortresses, along with several B-26 Marauders.
http://en.wikipedia.org/wiki/Battle_of_Midway
http://en.wikipedia.org/wiki/B-17_Flying_Fortress
A squadron in air force, army aviation or naval aviation is mainly a unit
comprising a number of military aircraft, usually of the same type,
typically with 12 to 24 aircraft, sometimes divided into three or four
flights, depending on aircraft type and air force. In most air forces, two
o... 阅读全帖 |
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d***y 发帖数: 168 | 18 他说的就是正态分布,他的P(4σ)/P(2σ)还有P(6σ)/P(2σ)就是按正
态算的。当然有fat tail,可单一犹太民族跟东亚多民族比谁的tail更fat还真未必。 |
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e****i 发帖数: 2152 | 19 by Martin Luther (1483-1546)
Translated by Martin H. Bertram
copyright © 1971 Fortress Press & Augsburg Fortress - On the Jews and
Their Lies is from Luther’s Works Volume 47. Augsburg Fortress is the
publishing ministry of the Evangelical Lutheran Church in America.
Funded through sales revenue, Augsburg Fortress is called to provide
products and services that communicate the Gospel, enhance faith, and
enrich the life of the Christian community from a Lutheran perspective.
Part I
I had mad... 阅读全帖 |
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c**i 发帖数: 6973 | 20 (1) 歼-20拉开美中军事竞赛帷幕? VOA Chinese, Jan 14, 2011.
http://www.voanews.com/chinese/news
/20110114-Challenges-Posed-by-J-20-113673394.html
Quote:
(a) 美国权威武器问题专家、莱克星顿研究所(Lexington Institute)的劳伦.汤普森博
士(Dr. Loren Thompson)说:
“我不知道中国军方是否想到了这一点,那就是,盖茨访华期间歼-20的试飞无意之中
很可能给美国的军工企业助了一臂之力。
“美国人通常对中国事务不是特别留心,但是国防部长盖茨访华期间,有关中国的新闻
,大家都很留心。而这期间,中国试飞了众人之前都认为10年之内不可能研发出的战机
,立即吸引了所有人的注意力。
"这一回,中方彻底做到了美国国内没有人能做到的,那就是,让国会重新考虑是否应
当继续生产F-22战机。
(b) 汤普森说,美方最终是否决定生产更多的F-22,目前还不好说,但是,假如决定继
续生产F-22的话,那么,F-22的主要厂家、洛克希德-马丁公司(Loc... 阅读全帖 |
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o*z 发帖数: 1078 | 21 这帮CIA爆料的真以为我们都是白痴啊,谎话都编不圆,这都第几个version了,
越爆越SB
The SEAL special operators who went in after Osama bin Laden originally
planned to try to get him with a “squeeze play,” landing silently on his
roof and in the yard of his compound, the AP’s Kim Dozier reports, but the
frogmen had to throw that out when their helicopter crash-landed. Dozier
quotes a new set of the infamous “officials” briefed on the raid in her
must-read story, which is the latest to update the now-familiar narrative of
Geronimo E-... 阅读全帖 |
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w********l 发帖数: 11447 | 22 我直接看表,没看原文。
其实我确实很晕这个percentile定义。我在做数学统计相关的描述是,同时要指明是不
是low tail的percentile. 很多软件也是这么定义参数的。如果是,我的理解就对。如
果否,就是你的理解。
不过就算你的说法,难道5%的人拥有12.1%的总财富?还是这个地方也是用的upper
tail percentile, 也就是5%的人拥有88%的社会财富。
这个我承认,我确实不是太清楚它percentile的定义。不过无论哪种说法,结论都差不
多,5%的人88%的社会财富。
5% |
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l*******n 发帖数: 1867 | 23 Post a comment
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Thanks for posting. Would you like to edit your profile?
straso10 french frogs
0 minutes ago | Like | Report abuse
SimpleStupid Was DSK visiting at the time? Probably has a severe case of DSB
by now, which could result in an explosion.
2 minutes ago | Like | Report abuse
gulfstream69 God hates the French too.
3 minutes ago | Like | Report abuse
billfusion For inventing the manage ah tius? (3some)
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Madukali Proke, ... 阅读全帖 |
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A***C 发帖数: 143 | 24 先介绍一下我的身份,理想主义者,老将,业余评论员。
本文想探讨的是如何构建比美国式民主更好的,更适合中国的民主。我称
这样的民主为民主2.0.
美国本身其实也需要考虑更先进的民主,但本人最关心的是中国未来的民主本身。
本文只讨论中国。
1 什么是民主2.0?
跟台湾不一样,中国大陆没有出现大规模的党外运动。向艾未未,刘晓波等既热情
又愿意坐牢的人少之又少。很奇怪,在大陆连法律界和一般社会民众对这些党外
运动也出奇的冷漠。一方面是因为中共对媒体的控制比国民党优良,另一方面我个人
觉得是因为中国的党外运动没有着力点,或者说,没有一个被普遍认同的诉求。
6.4事件中有大量的热衷政治改革的人被牺牲掉了,但到了二十多年后的今天,已经
没多少人为他们讲话了。为什么?是人们太冷漠了吗?凭良心讲,有谁会反对他们
当年的诉求呢?我想很多人其实只是反对他们的抗争方式而已,但对他们的抗争诉求
应该是认同的。那为何对他们的牺牲如此无动于衷,甚至冷嘲热讽呢?我记得有个人
做过一个比喻,说一个人的妹妹要被别人强奸了,于是那个人就对强奸犯说,放开
我妹妹,不然先杀了我。结果那个人被杀了,他妹妹被强奸了。也许我们对那... 阅读全帖 |
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z*********i 发帖数: 1059 | 25 英文的发展趋势就是汉语话。定语前置,还大量用名词做定语。像“猪尾巴”,现在都
说pigtail。没人说pig's tail。更没人说tail of pig |
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h*****i 发帖数: 809 | 26 越是智商上有硬伤,越爱拿智商说事。。。
从憨憨的读者来看,智商的分布确实偏低
不过由于人口众多,不排除有个别outliers
不知道您是属于outliers中的lower tail还是higher tail? |
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e******e 发帖数: 3472 | 27 shall bye too, by you by, long jail air do shoot cheer lie! I cheer robber
her chin child, boom boom tail tail jam call at~~ |
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g**8 发帖数: 4951 | 28 中方曾经要求波音在北京奥运之前交货, 你说的试航证问题,那个时候存在吗
?也就是说你说的试航证问题确切吗?
而我可以给出刚刚在网上找到的多条当时中方要求北京奥运之前交货而波音没有交货的
网上新闻出处。
我在网上看到的787供应商和承包商名单里面,没有看到任何中国公司。
http://en.wikipedia.org/wiki/Boeing_787_Dreamliner
Manufacturing and suppliers
After stiff competition, Boeing announced on December 16, 2003, that the 787
would be assembled in its factory in Everett, Washington.[4] Instead of
building the complete aircraft from the ground up in the traditional manner,
final assembly would employ just 800 to 1,200 people to join... 阅读全帖 |
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g**8 发帖数: 4951 | 29 首先,我的那个贴里我的观点是美国不让中国参与,而不是中国不想参与。
其次,你给出的这个波音自己的中文官网上,他们大字说明了关键词:“非可见部分”
: 垂直尾翼后缘面板-- 天津波音复合材料有些公司
注意是其中使用的材料。可以使用在包括波音787在内的多种波音飞机上。而这个波音
中文官网上实在找不出别的内容了的拿材料说事的忽悠中国人的做法,我说实话,如果
我们认真就自作多情了。
另外说到底,那还是波音中国的独资公司,而网上具体给出的波音787成品组件供应商
里,确实没有任何中国公司.
还有, 为什么美国不给ARJ21适航证,不是防着中国吗?
最后,中方曾经要求波音在北京奥运之前交货, 你说的试航证问题,那个时候存在吗
?也就是说你说的试航证问题确切吗?
而我可以给出刚刚在网上找到的多条当时中方要求北京奥运之前交货而波音没有交货的
网上新闻出处。
----
我在网上看到的787供应商和承包商名单里面,没有看到任何中国公司。
http://en.wikipedia.org/wiki/Boeing_787_Dreamliner
Manufacturing and suppliers
After... 阅读全帖 |
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P*****t 发帖数: 4978 | 30 (07-07) 15:03 PDT SAN FRANCISCO -- An autopsy was being conducted Sunday to
determine whether one of the two teenaged passengers killed on the Asiana
Airlines flight had been run over by a San Francisco fire rig at the crash
scene.
The 16-year-old girl was found near the evacuation slide near the left wing
of Asiana Flight 214 which crashed Saturday during a landing at San
Francisco International Airport. The girl was not identified.
San Francisco Fire Chief Joanne Hayes-White said Sunday her in... 阅读全帖 |
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l******t 发帖数: 55733 | 31 Vietnam Searchers Report Spotting Plane Debris
Officials Say They Found Piece of Door, Airplane Tail
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By JASON NG, GAURAV RAGHUVANSHI and JAKE MAXWELL WATTS CONNECT
Updated March 9, 2014 9:59 a.m. ET
The fate of Malaysia Airlines flight MH370 is still unknown and the search
continues. The WSJ's Jake Maxwell Watts tells us the focus remains in the
South China Sea between Malaysia and Vietnam.
KUALA LUMPUR—A Vietna... 阅读全帖 |
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j****i 发帖数: 68152 | 32 语言的发展趋势是屈折语、黏着语向孤立语演变。汉语早在2000年前已经完成了这一过
程,西方语言至今还在苦苦挣扎。
瘸子里头挑将军,英语算是西方语言里最先进的。比如名词已经没有“格”的概念。猪
尾巴,不叫pig's tail,而叫pig tail。只有人称代词还保留“格”,但也有用宾格取
代主格的趋势,比如说It's me。而不说It's I。名词里只有人和动物还保留“性”,
一般名词已经没有“性”的概念了。其他语言,比如德语、俄语,还有阴性阳性的区别
,实在是落后的多。
可以预见在不久的将来,全世界将至剩下三种语言:汉语、英语、和西班牙语。而汉语
也仅限于北方官话 Mandarin。什么粤语、吴语这些进化不全的鸟语都将不服存在。阿
拉伯语、俄语、日语、朝鲜语,这些落后语言更是要扫进历史的垃圾堆了。
牛逼说汉语,吊逼说英语,苦逼说西班牙语。世界,就是这么简单。 |
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l*****o 发帖数: 192 | 33 My name is Courtney Curtis. I’m a native of Ferguson, Missouri. I’ve spent
my whole life in this community. Now, I am fortunate enough to represent
our community in the State Legislature.
But I’m still a young black man who has encountered problems with the
police. Five years ago, while waiting for a college friend of mine in his
gated community in Kansas City, I was handcuffed, had my car searched
against my will and was almost arrested. My crime? Sitting on the back of my
car, working on my bu... 阅读全帖 |
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j****i 发帖数: 68152 | 34 语言演变的规律是从综合语向分析语演变。定语后置是综合语的特征。远古汉语由大量
综合语的成分,中古汉语已经跟接近分析语,现代汉语是纯粹的分析语。英语相对印欧
语系其他语种,有更多分析语的成。特别是科学文献里,定语前置比定语后置更普遍。
比如猪尾巴,现在都说 pig tail,不说tail of pig
有空读几本语言学的书,不要把无知当有趣。 |
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p****s 发帖数: 3184 | 35 faint,我以为你说的“一直赢”是口语里的手气好一直赢,结果你是literally
speaking一直赢。呵呵
平常我们说打牌一直赢,只是说赢的次数比输的次数多太多。
在fair game里,比如猜fair coin flip的head和tail,你可以在短期内扔出head比
tail多10倍的情况,但不可能literally speaking一直赢的,真要这样还赌个屁啊。 |
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D****y 发帖数: 2207 | 36 没去看代码,但看了知乎的一些评论,如果评论说的是他的代码作的事情的话,那么什
么顶尖科学家10多年的研究,看懂论文都不止一个月实在是言过其实了。这件事的基础
知识在1998年出版的Advanced Compiler Design and Implementation的第15章第1节,
Tail-Call Optimization.理解Tail-Call Optimization的人要理解这个想法不会超过5
分钟。
在 |
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D****y 发帖数: 2207 | 37 就别扯什么研究10年,看懂一个月了,就是Tail-Call Optimization的一个扩展,
Tail-Call Optimization 20年前就进教科书了。而且这个扩展写篇论文就算了,
在实际应用中实在是让人头皮发麻,真这么干的话很多系统软件的前提假设都被
打破了。 |
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w*p 发帖数: 16484 | 38 Orlando shooter Omar Mateen was gay, former classmate says
11:08 p.m. Monday, June 13, 2016 | Filed in: News
A former classmate of Omar Mateen’s 2006 police academy class said he
believed Mateen was gay, saying Mateen once asked him out.
Officials say Mateen shot and killed 49 people and injured 53 others at an
Orlando nightclub early Sunday morning.
Orlando shooter Omar Mateen was gay, former classmate says photo
Allen Eyestone
Sidiqque Mir Mateen, father of Omar Mateen, speaks about his son at... 阅读全帖 |
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l*y 发帖数: 21010 | 39 http://www.youtube.com/watch?v=s59rx_VBCY8
One of those fucking awful black days
When nothing is pleasing and everything that happens
Is an excuse for anger
An outlet for emotions stockpiled, an arsenal, an armour
These are the days when I hate the world
Hate the rich, hate the happy
Hate the complacent, the TV watchers
Beer drinkers, the satisfied ones
Because I know I can be all of those little hateful things
And then I hate myself for realizing that
There's no preventative, directive or safe ... 阅读全帖 |
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l*******1 发帖数: 16217 | 40 从统计学上来讲,先确定性质,是one tailed T-test, 需要少量证据就可以p<0.05,
如果不能先确定性质,是two tailed T-test, 需要更多证据才能证明p<0.05 |
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d********m 发帖数: 3662 | 41 哦,是用高斯逼近binomial。但是王博士说分布经常有fat tail,这个fat tail又是从
哪里来的呢如果是单纯的逼近binomial里的p |
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b********6 发帖数: 35437 | 42 澳洲龙虾没有大钳子,相同重量的话肉少很多。外观上澳洲龙虾是花的,波士顿龙虾是
暗红色。煮熟了应该都是红的。
costco里面cold water lobster tail和 warm water lobster tail的价格都是$ 19.9
/ lb,应该是差不多的东西 |
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发帖数: 1 | 43 tail call optimization本质就是把call变jmp
然后call stack 复用
: 递归要不是tail recursion很快就stack overflow了。
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X1 发帖数: 1823 | 44 "You have a 100 coins laying flat on a table, each with a head side and a
tail side. 10 of them are heads up, 90 are tails up. You can't feel, see or
in any other way find out which side is up. Split the coins into two piles
such that there are the same number of heads in each pile."
是不是就是把每个coin切成两半,然后每个coin一边一半 |
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l*******s 发帖数: 7316 | 45 如果题目沒少字,只要分成两堆各50个硬币即可。因为每个硬币都有头
:"You have a 100 coins laying flat on a table, each with a head side
and a
:tail side. 10 of them are heads up, 90 are tails up. You can't feel,
see or in any other way find out which side is up. Split the coins into two
piles |
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c********e 发帖数: 4283 | 46 Costco的lobster tail都是澳龙 是要$20一磅了 买过 不好吃 还是喜欢活的 我们这里
local店也有美国本地龙虾的lobster tail 常年4.99 不好吃 |
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x********e 发帖数: 35261 | 47 知道为啥叫S和L亚型吗?short和long的首字母。其中长的部分很可能是C端的polyA
tail。已经有研究表明PolyA调控病毒蛋白翻译,tail越长,蛋白翻译效率越高。另外
一个区别在于N端,S亚型和蝙蝠病毒类似,要比L亚型短十几个核酸。这多出来的核酸
很可能影响mRNA capping,影响Orf1ab的翻译。Orf1ab编译了病毒调控宿主免疫的蛋白
和自身复制的蛋白。Orf1ab翻译效率越高,毒性就越强。 |
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发帖数: 1 | 48 A Bright Comet With A Tail Could Adorn Twilight Just As The Coronavirus
Epidemic Peaks
9 hours ago · “Comet Atlas” is getting a tail. Could it be that we're
about to get a bright comet, visible to the naked eye to everyone in the
northern hemisphere |
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O*******d 发帖数: 20343 | 49 There is a rise in pressure at the nose, decreasing steadily to a negative
pressure at the tail, followed by a sudden return to normal pressure after
the object passes. This "overpressure profile" is known as an N-wave because
of its shape. The "boom" is experienced when there is a sudden change in
pressure, so the N-wave causes two booms, one when the initial pressure rise
from the nose hits, and another when the tail passes and the pressure
suddenly returns to normal. This leads to a distincti... 阅读全帖 |
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m***c 发帖数: 1177 | 50 打佩刀式敌机的能手鲁珉
李大年/侯祖沛/梁南
中国人民志愿军空军某部大队长鲁珉,在去年十二月份的五次空战中,连续英勇地击落
五架美国佩刀式(F—八十六型)喷气机,荣获志愿军空军领导机关颁给的 “特等人
民功臣”、“打佩刀式敌机的能手”和“志愿军空军一级战斗英雄”的光荣称号。朝鲜
民主主义人民共和国政府为了表彰他的功绩,特授予他二级自由独立勋章。
不久以前,我们在前线某基地访问了这位出色的英雄。他有着魁伟的身体,浓黑的眉毛
,鹰一样机警灵活的眼睛。他两手拿着一对铝质喷气式飞机的模型,向我们介绍他在历
次空战中痛击美国空中强盗的英勇事迹。
去年十二月五日,他带领着整齐的编队,飞快地向南方挺进。这一带的天空,他是非常
熟悉的。他清楚地记得:当第一次在这一带上空飞行时,还可以看到地面有几排灰土色
的房屋,第二次飞过这里,灰土色的房屋,便骤然地减少了,到第三次飞到这里,却再
也找不到这些房屋了。他知道,这是美国空中强盗炸毁的。以后,每当飞过这里,他都
愤怒地搜索着敌机。这次,就在这一带的上空,从远远的薄云层中,他发现了六架敌机
,两架在前,四架在后。它们从西往东,正向海岸飞来。
鲁珉率领他的机群... 阅读全帖 |
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