转化酶

第60期: speed, show, icy, conception, thought

说一口流利的英语，从简单的单词开始。听听，读读，背背，今天你的词汇量又增加了5个。单词/词义中英例句单词听读 speed [ spi:d ] The ambulance sped to

发表于:2018-12-30 / 阅读(85) / 评论(0)

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SSS 2008-11-05

This is Scientific American's 60-Second Science. I'm Steve Mirsky . Got a minute ? You might think that the World Toilet Summit was a meeting of Wall Street bigwigs. But no, its actually about toilets. The three day conference opened on November 4th

发表于:2019-01-08 / 阅读(48) / 评论(0)

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EXPLORATIONS - Koshland Science Museum

EXPLORATIONS - Koshland Science Museum By Broadcast: Wednesday, March 02, 2005 (MUSIC) VOICE ONE: I'm Steve Ember. VOICE TWO: And I'm Faith Lapidus with the VOA Special English program EXPLORATIONS. T

发表于:2019-01-10 / 阅读(276) / 评论(0)

Explorations

VOA标准英语2010年-World Food Prize Laureate Encouraged b

The winner of the 2010 World Food Prize says eradicating hunger is within reach. The comment came as the United Nations prepares to hold its summit next week (9/20-22) on the Millennium Development Goals. Rev. David Beckmann says he's encouraged by e

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For all our research, resources, technology and collective intelligence theres still way more that we dont know about managing the human body, than we do. We like to think were more enlightened than ever but in many ways were still failing miserably

发表于:2019-02-07 / 阅读(84) / 评论(0)

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acute inflammation of orbit with protrusion of eyeball

adoption convention

amplitude impulse response

balanced reinforcement beam

be critical of sth

be from

bitale