n. 原子核结合能

VOA慢速英语2017 世界上第一个核聚变反应堆已完成50%

World's First Nuclear Fusion Reactor 50 Percent Complete At the Geneva Superpower Summit in November 1985, American President Ronald Reagan met with the Soviet Union's General Secretary Mikhail Gorbachev. 在1985年11月的日内瓦超级大国首脑会

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2018年VOA慢速英语(一)月

巴黎气候大会最新报道

AS IT IS 2015-12-06 The Latest From Paris: Climate Conference Update 巴黎气候大会最新报道 At the United Nations climate change summit in Paris this week, participants talked about natural disasters and how they impact the worlds most vulner

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2015年VOA慢速英语(十二)月

专业术语—口腔生理学术语P4(英文详解)

Polymers-large molecules made up of many joined units of a more simple molecule. Examples are polysaccharides and polypeptides. Polypeptides; -chains of amino acids joined by peptide bonds. They are n

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医务英语

2007年VOA标准英语-US House of Representatives Approves Measure St

By Dan Robinson Capitol Hill 25 September 2007 The U.S. House of Representatives has approved legislation to strengthen economic sanctions against Iran over its support for terrorist groups and refusal to halt uranium enrichment. VOA's Dan Robinson

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2007年VOA标准英语（九月）

TED演讲:为什么玻璃是透明的(2)

But this still doesn't explain why light is able to pass through glass rather than being absorbed as with most solids. 但是这还是不能解释为什么光可以穿透玻璃而不是像其他大多固体那样被吸收。 For that, we need to go a

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TED演讲教育篇

VOA双语新闻 ---气候变化对发展中国家特有风险？

International concern is mounting that global warming could put millions of people at risk through drought, floods and other extreme weather. A group of economists, scientists, and international leaders met in New York recently to discuss how climate

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VOA双语新闻 2008年4月

PBS高端访谈:今年的巴黎气候大会与往年有何不同呢?

GWEN IFILL: The climate talks over the next two weeks are expected to become a turning point in the global debate over addressing the causes of a rapidly warming planet. The lofty speeches have already begun, but what do leaders gathering in Paris th

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PBS访谈环境系列

VOA常速英语2008年-'State of the Planet' Summit Concludes Climate

By Victoria Cavaliere New York 23 April 2008 International concern is mounting that global warming could put millions of people at risk through drought, floods and other extreme weather. A group of economists, scientists, and international leaders me

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VOA常速英语2008年（四月）

外媒：化石燃料时代的终结？

The G7 has called for a transformation of electricity generation towards clean sources by 2050. 七国集团峰会呼吁到2050年为止要完成从电力生产到清洁能源的转变。 They said fossil fuel should not be burned in any sector of th

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英语新闻

万物简史第203期:威力巨大的原子(17)

Meanwhile the tireless Rutherford, now back at Cambridge as J. J. Thomson's successor as head of the Cavendish Laboratory, came up with a model that explained why the nuclei didn't blow up. He saw that they must be offset by some type of neutralizing

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万物简史

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学英语单词

acid paper

adjustable-speed

Antidependency

argument of complex number

aucklandiae radix

balance plate unit

bathypelagic plankton