[化] 葡糖二酸单内酯
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SSS 2011-02-01

This is Scientific Americans 60-Second Science. Im John Matson, Got a minute? Imagine a pinball machine on multi-ball modeonly the balls are the size of planets. The early solar system was such a rough-and-tumble place. That chaotic environment produ

发表于:2019-01-08 / 阅读(183) / 评论(0)

Scientific American(二)月

美国习惯用语:293 class act; hard act to follow;

今天要讲的惯用语里有个共同的词act。这真是个多义词，但是我们的时间有限说不了那么多，所以今天要说到的act都有表演的意思。比方说，我们要学的第一个习惯用语是：class act。 Class这里

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美国习惯用语

2007年VOA标准英语-UN Chief Says International Community Must Act

By Margaret Besheer United Nations 25 September 2007 An unprecedented summit on climate change has ended at the United Nations. Secretary-General Ban Ki-moon says the event has sent a powerful political signal to the world that there is the will and

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2007年VOA标准英语（九月）

2006年VOA标准英语-Pluto Demoted, No Longer a Planet

By Patricia Nunan in Kantale, Sri Lanka 24 August 2006 As many as 170,000 people in northern and eastern Sri Lanka have been displaced in recent weeks by fighting between the Tamil Tiger rebels and government forces. VOA's Patricia Nunan recently me

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2006年VOA标准英语（八月）

2006年VOA标准英语-Nepal's Political Factions Vow to Work Tog

By Patricia Nunan Kathmandu 26 April 2006 After months of confrontation, Nepal's king and opposition political parties say they will work together to bring peace and democracy to the country. Parliame

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2006年VOA标准英语（四月）

2006年VOA标准英语-Astronomers Discover Two Moons Orbiting Pl

By Jessica Berman Washington 22 February 2006 U.S. astronomers have discovered two moons orbiting Pluto, an icy planet smaller than our moon. Scientists found the moons while surveying the sky as part

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2006年VOA标准英语（二月）

英文歌曲：Burhan G - Sacrafice

What I sacrificed Being in your life I'm walking blind One step behind Torn apart I'm all worn out Afraid to play The game portrayed Hard to maintain Hard to sustain I tried so hard I gave my soul But in return, left me all alone What I sacrificed Be

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节奏布鲁斯

英语听力：自然百科 Wolf Hunting Tactics 合作至上的狼群

We are here in Yellowstone National Park to follow some grey wolves and observe the deadly brilliance of the pack. Theyve learned to cooperate, hunting their prey with many acting as one pack. This mother grizzly knows how to protect its cub and itse

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自然百科2008年

学个词Learn a Word 第1154期 Transaction

今天我们要学的词是transaction。 Transaction, 交易。 The value and number of transactions in media industry mergers and acquisitions soared in 2010, 2010年传媒产业合并和收购交易的数量和交易总额都大幅攀升。 Facebo

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英语单词荟萃

Actos prevents diabetes in high-risk people

BEIJING, March 24 (Xinhuanet) -- A new study has found that Actos, a medicine treats onset diabetes, could also reduce the diabetes(糖尿病) risk in people with prediabetes. The study, which was published Wednesday in New England Journal of Medicin

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英语新闻

Who Was Sacagawen 萨卡加维亚 Chapter 9

Sorry,there is not text temporarily, Please help tingroom to look for it! 如果您能找到更好的听力原文，请发贴到听力原文收集区，您将会获得10到30积分的奖励! Thank you！

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名人认知系列 Who Was

Who Was Sacagawen 萨卡加维亚 Chapter 8

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名人认知系列 Who Was

Who Was Sacagawen 萨卡加维亚 Chapter 7

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名人认知系列 Who Was

Who Was Sacagawen 萨卡加维亚 Chapter 6

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名人认知系列 Who Was

Who Was Sacagawen 萨卡加维亚 Chapter 5

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名人认知系列 Who Was

Who Was Sacagawen 萨卡加维亚 Chapter 4

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名人认知系列 Who Was

Who Was Sacagawen 萨卡加维亚 Chapter 3

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名人认知系列 Who Was

Who Was Sacagawen 萨卡加维亚 Chapter 2

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名人认知系列 Who Was

Who Was Sacagawen 萨卡加维亚 Chapter 1

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名人认知系列 Who Was

Who Was Sacagawen 莎卡嘉薇亚

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名人认知系列 Who Was

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学英语单词

aero-gamma survey

anterodorsal angle

applicant for registration

asplanchnic

automatic data digitiing system

block check procedure

blue discolo(u)ration