根瘤菌

VOA标准英语2012--Bacterium Targets Untreated HIV-Positive People

Bacterium Targets Untreated HIV-Positive People Researchers are warning of an emerging form of intestinal disease in sub-Saharan Africa. Its targeting mostly HIV-infected people, who are not on treatment. The disease kills up to 45 percent of those i

发表于:2018-12-08 / 阅读(79) / 评论(0)

VOA标准英语2012年(九月)

SSS 2011-10-21

This is Scientific American's 60-Second Science. I'm Steve Mirsky. Got a minute? The human genome was sequenced, and in the process of moving that forward the technology that was developed was incredible. And because of their efforts in human genome,

发表于:2018-12-24 / 阅读(158) / 评论(0)

Scientific American(十)月

注意街头食品的卫生

92 注意街头食品的卫生 DEVELOPMENT REPORT September 10, 2001: Street Food SafetyBy George Grow （Start at 1'01

发表于:2019-01-02 / 阅读(83) / 评论(0)

科技之光

SSS 2010-04-08

This is Scientific American's 60-Second Science. I'm Karen Hopkin. This'll just take a minute. If you want to shell a walnut, it helps to have a nutcracker. And if you want to digest seaweed, it helps to have the right enzymes. Now, a study in the jo

发表于:2019-01-08 / 阅读(104) / 评论(0)

Scientific American(四)月

NPR 2010-12-03

The US House is expected to vote this hour on whether to extend expiring tax cuts for everyone, including the wealthy. NPR's Andrea Seabrook reports the issue's been generating heated debate. Democrats say they want to keep lower tax rates from middl

发表于:2019-01-08 / 阅读(135) / 评论(0)

2010年NPR美国国家公共电台12月

VOA慢速英语 2008 0319a

Health Report - Vaccine a Big Success Against Meningitis in Uganda Rates in young children drop to zero in areas of the country included in a study. Transcript of radio broadcast: 18 March 2008 This is the VOA Special English Health Report. Meningit

发表于:2019-01-11 / 阅读(109) / 评论(0)

VOA慢速英语2008年（三）月

Experts: Let Produce Dry Out to Avoid Bacteria

Experts: Let Produce Dry Out to Avoid Bacteria American researchers say farmers should wait one day after a rain storm or watering their fields to harvest fresh fruits and vegetables. They say gathering the crops at least 24 hours after rainfall incr

发表于:2019-01-12 / 阅读(185) / 评论(0)

2015年VOA慢速英语(七)月

英语六级语法之名词复数的不规则变化

英语六级考试语法：名词复数的不规则变化规则变化的复数名词有以下几种构成法。构成方式举例说明构成法1: 改变内部母音字母。 footfeet toothteeth manmen womanwomen mousemice 构成法2: 加字尾en或

发表于:2019-01-17 / 阅读(62) / 评论(0)

大学四六级阅读

经济学人:一周商业要闻4

Business this week 一周商业要闻 Britain's recovery gathered pace. 英国经济加快复苏脚步。 Industrial output grew by 1.2% year on year, the fastest rate since January 2011, with manufacturing up by 2%. 工业产出与去年同期相比增

发表于:2019-01-26 / 阅读(132) / 评论(0)

经济学人要闻

万物简史第78期:事物的测定(26)

Delicacy was the key word. Not a whisper of disturbance could be allowed into the room containing the apparatus, so Cavendish took up a position in an adjoining room and made his observations with a telescope aimed through a peephole. The work was in

发表于:2019-01-29 / 阅读(76) / 评论(0)

万物简史

VOA慢速英语20060502b

AGRICULTURE REPORT - Going Biotech on the Farm: Second of Two PartsBy Mario Ritter Broadcast: Tuesday, May 02, 2006 I'm Steve Ember with the VOA Special English Agriculture Report. Farmers from a numb

发表于:2019-01-30 / 阅读(74) / 评论(0)

2006年慢速英语（五）月

VOA慢速英语20060425a

AGRICULTURE REPORT - Going Biotech: A Spanish Farmer Discusses His ExperienceBy Mario Ritter Broadcast: Tuesday, April 25, 2006 I'm Steve Ember with the VOA Special English Agriculture Report. The Bio

发表于:2019-01-30 / 阅读(187) / 评论(0)

2006年慢速英语（四）月

经济学人233:纳米技术生物工厂

Science and technology 科学技术 Nanotechnology 纳米技术 A fab result 生物工厂 A novel way of making computer memories, using bacteria 制造计算机存储器的新奇方法：使用细菌 FOR half a century, the essence of progress in th

发表于:2019-02-03 / 阅读(93) / 评论(0)

经济学人科技系列

美科学家合成出迄今最简单生命形式

US scientists have stripped life back to its bare essentials creating a synthetic microbe with the absolute minimum genetic information needed to grow and reproduce. 美国科学家将生命的多余部分剔除，只留下最基本的要素，由此创

发表于:2019-02-05 / 阅读(85) / 评论(0)

英语新闻

经济学人: 孤独症 (3)

Follow-up examinations of the mice in all these experiments looked at the strengths of connections between nerve cells within part of the brain called the ventral tegmental region. 在所有这些实验中，老鼠的后续检查是观察中脑腹侧被

发表于:2019-02-16 / 阅读(108) / 评论(0)

经济学人科技系列

经济学人: 孤独症 (2)

She found that, while the genetically engineered mice and the BTBR mice had, as expected, reduced levels of L. reuteri, 她发现，虽然经过基因编辑的老鼠和BTBR老鼠体内的罗伊氏乳杆菌果然有所减少， and those with bacteria

发表于:2019-02-16 / 阅读(87) / 评论(0)

经济学人科技系列

At least 13 killed in listeria outbreak in U.S

WASHINGTON, Sept. 27 (Xinhua) -- At least 13 people had been killed amid 72 sickened in 18 states in listeria outbreak traced to Colorado cantaloupes, making it the most deadly U.S. outbreak of food-borne infection since 1998, the Centers for Disease

发表于:2019-02-18 / 阅读(83) / 评论(0)

英语新闻

经济学人458:制造计算机存储器的新奇方法

Science and technology. 科技。 Nanotechnology. 纳米技术。 A fab result. 生物工厂。 A novel way of making computer memories, using bacteria. 制造计算机存储器的新奇方法：使用细菌。 FOR half a century, the essence of prog

发表于:2019-02-19 / 阅读(89) / 评论(0)

经济学人综合

万物简史第382期:浩瀚的海洋(1)

18 The Bounding Main 第十八章浩瀚的海洋 Imagine trying to live in a world dominated by dihydrogen oxide, 请你想像一下，你能不能生活在一个由一氧化二氢主宰的世界里。 a compound that has no taste or smell and is so

发表于:2019-02-25 / 阅读(143) / 评论(0)

万物简史

TED演讲：细菌是怎样交流的(2)

These bacteria are not passive riders, these are incredibly important, they keep us alive. 这些细菌不是顺从的乘客，他们难以置信得重要，他们让我们活着。 They cover us in an invisible body armor that keeps environmental in

发表于:2019-03-04 / 阅读(133) / 评论(0)

TED演讲教育篇

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autumn-dryness disease