单词：james-stein estimator
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BOB DOUGHTY: And Im Bob Doughty. Many boys and girls like science. Some of them go to the Internet to find answers to scientific questions. Today, we will tell about a few science websites for children. (MUSIC) FAITH LAPIDUS: Millions of children aro
2010年VOA慢速英语(十二)月
by Jason Marshall Sometimes statistics* seems magical. Of course, there isnt really anything magical going onbut the fact that statistical methods can be used to pull useful information out of a hatful of messy data is, at a minimum, remarkable. And,
数学英语
This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. Every year, scores of manatees are killed by boats in Floridas waters. Their plight is an ecological concern. And everyone from marine biologists to Marg
Scientific American(十一)月
This is Scientific American's 60-Second Science. Hi, Steve Mirsky. Here, I'm going over our usual one minute today. By now you've probably heard of Expelled, the new Ben Stein anti-evolution crocumentary. It officially opens today, as I speak that's
Scientific American(四)月
How We Date: Here, There and Everywhere If you are in Uganda, what quality could most hurt your chances for getting a date? As a tourist in Myanmar, what is the worst way to meet someone? To answer these questions and many more, VOA talked to an inte
2015年VOA慢速英语(五)月
Americans Turn to AIDS Drugs to Prevent HIV Infection New research in Africa confirms that a once-a-day pill, used to treat patients infected with the virus which causes AIDS, also works to prevent HIV infection in healthy people. For 20-year-old New
VOA标准英语2011年(七月)
ARI SHAPIRO, HOST: And now we're joined by NPR national justice correspondent Carrie Johnson. Hi, Carrie. CARRIE JOHNSON, BYLINE: Hi, Ari. SHAPIRO: You followed Rosenstein for years since he was the U.S. attorney in Baltimore. Is this account in char
2018年NPR美国国家公共电台9月
AUDIE CORNISH, HOST: Rod Rosenstein is still the deputy attorney general at the Justice Department despite conflicting reports about his fate earlier today. TV cameras recorded him leaving his home for a meeting at the White House. A short while late
2018年NPR美国国家公共电台9月
Finance and Economics；Short-selling litigation;An enlightening mistake; 财经；卖空交易诉讼；一个给人启发的失误； Defence lawyers reveal more than they meant to in a closely watched legal case; 在一个备受关注的法律官司中
经济学人财经系列
GWEN IFILL: Now we return to our weeklong series on the challenges of bringing up baby. We call it Parenting Now. Tonight, we look at how we raise girls in what has become a princess culture. CHILD: I found it. Mommy, I found it. GWEN IFILL: For pare
PBS访谈教育系列
JUDY WOODRUFF:Back in the U.S., the release of the president's budget today touched off a fresh round of debate in Washington about spending priorities. Mr. Obama called on lawmakers to support investments that would help create jobs. But Republicans
PBS访谈商业系列
JEFFREY BROWN:And finally tonight, remembering the popular movie reviewer and television co-host Roger Ebert. He was the first film critic to win the Pulitzer Prize. He died today at age 70. Hari is back with our remembrance. 83.jpg HARI SREENIVASAN:
PBS访谈娱乐系列
Einstein and God 爱因斯坦与上帝 Einstein climbs to the top of Mt. Sinai to get close enough to talk to God. Looking up, he asks the Lord...God, what does a million years mean to you? The Lord replies, A minute. Einstein asks, And what does a m
趣味英语
The low-key Dougan is being paid $17.9 million for his work in 2009, a reward for returning the company to profitability. That makes him the world's second-highest paid banker this year, according to Deal Journal's calculations. The world's biggest b
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Finding a date for Prom can be a stressful experience for many. Just ask Sam Steingard. 对许多人来说，找一个毕业舞会的伴儿可能是一次压力满满的体验。那正好问问Sam Steingard吧! With the big date drawing ever nearer,
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Finding a date for Prom can be a stressful experience for many. Just ask Sam Steingard. 对许多人来说，找一个毕业舞会的伴儿可能是一次压力满满的体验。那正好问问Sam Steingard吧！ With the big date drawing ever nearer
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CHEERS greeted Barack Obamas hiring of Cass Sunstein away from the University of Chicago. Mr Sunstein, a lawyer, now head of the Office of Information and Regulatory Affairs, is in charge of lifting the heavy hand of regulation from Americas economy.
经济学人综合
left-skewed 左偏 negative-skewed 负偏 right-skewed 右偏 positive-skewed 正偏 contingency table 列联表 sampling distribution (of a statistic)(某个统计量的) 抽样分布point estimate 点估计值 point estimator 点估计式 unbiased
英语口译