[数] 拟幂零的

数学英语 23 What are the Range and Standard Deviation?

by Jason Marshall Weve now talked about three methods for calculating average values: the mean, median, and mode (affectionately known as the three Ms). So, are we done? Is that everything we could ever want to know about interpreting average values?

发表于:2018-12-07 / 阅读(156) / 评论(0)

数学英语

全球堵车

Rob: Hello, I'm Rob, welcome to 6 Minute English. I'm joined today by Jennifer. Jennifer: Hi there, Rob. Rob: Thanks for joining me. Now, this year the BBC is looking into the future, in key areas of science, politics, education and our personal life

发表于:2019-01-07 / 阅读(181) / 评论(0)

六分钟英语

SSS 2011-10-05

This is Scientific American's 60-Second Science. I'm Steve Mirsky. Got a minute? The 2011 Nobel Prize in chemistry goes to Daniel Schechtman of the TechnionIsrael Institute of Technology in Haifa. Schechtman discovered what are called quasicrystals.

发表于:2019-01-08 / 阅读(225) / 评论(0)

Scientific American(十)月

树木的困境

The trouble with trees 自人类诞生之日起，树木就一直忠实地陪伴着我们。年复一年的生息轮回中，除了年轮的增长，我们似乎很难察觉树木所经历的改变。然而，我们的这些老朋友在全球气候急剧

发表于:2019-01-08 / 阅读(119) / 评论(0)

英语笔译

VOA标准英语2011--Potent Antibodies Offer New AIDS Vaccine

Potent Antibodies Offer New AIDS Vaccine Design Researchers say powerful antibodies may hold clues to developing an effective AIDS vaccine. The antibodies were isolated from individuals already infected with HIV. Dr. Wayne Koff says the goal is to fi

发表于:2019-01-14 / 阅读(132) / 评论(0)

VOA标准英语2011年(八月)

英语单词大师：Facinorous

AA: I'm Avi Arditti with Rosanne Skirble, and this week on Wordmaster: Anu Garg, creator of the A.Word.A.Day Web site and author of a new book called Another Word A Day: An All-New Romp Through Some of the Most Unusual and Intriguing Words in English

发表于:2019-01-18 / 阅读(173) / 评论(0)

英语单词大师-Word Master

【一起听英语】全球交通拥挤

假设一种情况，如果地球上的每个人都拥有一辆车，那么我们的交通状况会是怎样？即使现在没有实现人手一辆车，但交通拥堵的情况依旧存在..... Rob: Hello, I'm Rob, welcome to 6 Minute English. I'm j

发表于:2019-01-23 / 阅读(119) / 评论(0)

一起听英语

词汇大师(Wordmaster)--What Does It Say

发表于:2019-01-25 / 阅读(203) / 评论(0)

词汇大师(Wordmaster)

经济学人52:广场上的旁观者

Books and Arts; Book Review;Revolution in Egypt;Square eyes 文艺；书评；埃及的革命;广场上的旁观者 Cairo: My City, Our Revolution. By Ahdaf Soueif. 开罗：我的城市，我们的革命。作者：AHDAF SOUEIF。 The big themes of

发表于:2019-01-26 / 阅读(105) / 评论(0)

经济学人文艺系列

omg美语：1017 OMG!美语 Willy Nilly!

1) Holy moly！太神奇了，我的天！ 2) willy-nilly 随意地,杂乱地 3) dilly dally 磨蹭 OMG冷笑话:子曾经曰过，有整理强迫症的少年上辈子都是折翼的天使，你伤不起。

发表于:2019-02-03 / 阅读(136) / 评论(0)

OMG美语

职场女人最爱的一种“兴奋剂”

一项新的调查发现高收入的成功女性和成功男人们简直一模一样，愿意利用他们的权力去吸引年轻的异性，进而放纵。一项新的学术研究表明，女性在本性上并不比男人更加坚贞。只是在过去

发表于:2019-02-04 / 阅读(154) / 评论(0)

求职英语

NBA权力榜:总冠军争夺者

The NBA season is only weeks away, and though there were a lot of changes this summer, most of the teams at the top remain the same. Every team is hopeful in preseason, but only a handful have realistic odds of a championship and even those are sligh

发表于:2019-02-07 / 阅读(110) / 评论(0)

英语新闻

学个词 Learn a Word-VOA英语教学 2894 potent

今天我们要学的词是potent。Potent形容词，意思是有效的、强有力的。Fentanyl, a super potent synthetic drug at the center of a new overdose crisis in America, is presenting huge challenges for law enforcement officials. 处在美

发表于:2019-02-16 / 阅读(120) / 评论(0)

英语单词荟萃

经济学人351:持枪的纯爷们(2)

The NRA also claims to be a potent force in elections; it says it defeated 19 of the 24 congressmen who were on its hit-list back in 1994. But a recent article in American Prospect disputes such assertions, arguing that the NRAs impact is marginal th

发表于:2019-02-17 / 阅读(129) / 评论(0)

经济学人综合

NASA ready to launch shuttle Endeavour

BEIJING, May 16 (Xinhuanet) -- NASA has readied the space shuttle Endeavour for its liftoff set for Monday, media reported Monday. Good weather looks 70 percent likely for Monday's scheduled launch of Endeavour, the next-to-last U.S. space shuttle mi

发表于:2019-02-18 / 阅读(127) / 评论(0)

英语新闻

非洲的出租车竟长这样！看完哭到不行

Uwunguruza abantu nikinga, in the Kurundi dialect of Burundi, means bike taxi-man. In the small East African countrys capital, Bujumbura, cyclists transport everything from human passengers to huge bundles of bananas and sugarcane to bricks and bedro

发表于:2019-02-18 / 阅读(170) / 评论(0)

阅读空间

每天吃鲑鱼像戒烟一样有益

Eating a small steak every day could be as good for you as stopping smoking, scientists say. 科学家说，每天吃一小块牛排可以像戒烟一样对你有好处。 People who eat lots of protein-rich food were found to have lower blood pressu

发表于:2019-02-18 / 阅读(380) / 评论(0)

阅读空间

经济学人268:干细胞的应用特效医学

Science and technology 科学技术 The uses of stem cells 干细胞的应用 Potent medicine 特效医学 Stem cells may transform the development of new drugs 干细胞可能改写新药发展 PLURIPOTENT is a long word that means able to do many t

发表于:2019-02-24 / 阅读(151) / 评论(0)

经济学人科技系列

谚语欣赏

Bacchus has drowned more men than Nepture. 酒神淹死的人比海神多。 Bad news has wings. 坏事传千里。 Bad workmen often blame their tools. 拙匠常怪工具差。 Bare words, no bargain. 空言不能成交易。 Barking dogs seldom bit

发表于:2019-02-26 / 阅读(133) / 评论(0)

实用英语

与同事友好相处助长寿

Getting along with your work colleagues could actually help you live longer, new research has shown. A study of 820 men and women showed those with good peer-to-peer relationships had a lower risk of mortality than those did not chime with their co-w

发表于:2019-03-02 / 阅读(154) / 评论(0)

实用英语

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cataphoretic deposition process