氟化钸(III) {三氟化钸}

自考英语综合二下册课文 lesson 8

[00:00.00]Lesson Eight [00:02.80]Text [00:05.43]How I Designed an A Bomb [00:09.59]in My Junior Year at Princeton John A . Phillips and David Michaelis [00:19.15]The first semester of my junior year at Princeton University is a disaster, [00:27.30]an

发表于:2018-12-01 / 阅读(280) / 评论(0)

自考英语综合二下册课文+单词

SSS 2010-12-29

This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. Beauty is only skin deep. And the beauty of shiny white teeth is even less deep. Because a new study shows that fluoride forms a thinner protective shiel

发表于:2018-12-02 / 阅读(191) / 评论(0)

Scientific American(十二)月

美国国家公共电台 NPR 2015-12-28

From NPR news in Washington, I'm Windsor Johnston.There are reports of major flooding in parts of the south after a severe storm system went through several states this week. In Alabama, residents in the town of Alba have been told to move to higher

发表于:2018-12-02 / 阅读(124) / 评论(0)

2015年NPR美国国家公共电台12月

Dental Health

07 牙病的预防与治疗 DATE=2-27-01 TITLE=SCIENCE IN THE NEWS #2113 - (1)Dental Health BYLINE=Nancy Steinbach VOICE ONE: This is Sarah Long. VOICE TWO: And this is Bob Doughty with Science in the

发表于:2018-12-07 / 阅读(145) / 评论(0)

科技之光

Former US Nuclear Center Now a Wildlife Refuge

A former nuclear weapons center is now a wildlife refuge. 美国一处前核武器工厂现在成为了野生动物保护区。 The United States Fish and Wildlife Service officially opened the Rocky Flats National Wildlife Refuge in Colorado last we

发表于:2018-12-08 / 阅读(145) / 评论(0)

2018年VOA慢速英语(九)月

澳洲新闻 (ABC新闻快递) 2011-03-29

A jury has found a man who threw his four-year-old daughter off Melbourne's Westgate Bridge guilty of murder. Arthur Freeman was found guilty after the jury deliberated for five days. The jury members had earlier told the judge they would not be able

发表于:2018-12-11 / 阅读(101) / 评论(0)

澳洲ABC新闻快递2011年

NPR边听边练248：戴尔电脑正式私有化

以下段落是摘自新闻里的一些重要信息,并不是一个段落的听写。空内信息可在本新闻中全部找到,大家可以根据这些信息复述新闻。一、泛听建议： 1、完整听一遍，掌握大意。 2、继续听，特

发表于:2018-12-26 / 阅读(109) / 评论(0)

NPR边听边练

口腔临床英语对话第29期:正畸治疗(2)

Is it necessary to have cavities in the baby teeth repaired? 乳牙蛀成了洞还有必要补上吗？ If the baby teeth are going to fall out, I don't think that it matters if they become decayed. 如果乳牙是要脱落的，我想蛀了也没有关

发表于:2018-12-27 / 阅读(178) / 评论(0)

口腔临床英语对话

VOA慢速英语仔细复盘伊朗核交易

A Closer Look at the Iran Nuclear Deal 仔细复盘伊朗核交易 World powers have been working for years to limit Irans nuclear activities. But news reports often fail to provide details of the nuclear negotiations. Today we explore some of the is

发表于:2019-01-12 / 阅读(114) / 评论(0)

2015年VOA慢速英语(七)月

VOA标准英语2009-Russia Offers Use of Territory for North Korean

Russia is a member of the six-party talks aimed at persuading North Korea to give up its nuclear weapons program. It has often sided with China to prevent tough U.N. sanctions against Pyongyang. Unused nuclear fuel rods are piled on shelves of wareh

发表于:2019-01-13 / 阅读(151) / 评论(0)

VOA标准英语2009年(五月)

VOA标准英语2010年-Coal Burning Linked to Fluoride Diseas

A cluster of villages in China's Guizhou province has been plagued by an outbreak of disease that damages teeth and bones. Now, a new study by Chinese and American researchers puts the blame on polluted coal burned in home fireplaces. In small quanti

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VOA标准英语2010年(十)月

科学美国人60秒 SSS 海狸牙齿的奥秘

Ah yes.The ol' fluoride rinse at the dentist. Not pleasant. But hey, good for your teeth, right? 没错，这是牙医洗牙用的含氟漱口水。确实够闹心的。但毕竟对你的牙齿有益不是吗? Well now materials scientists have been

发表于:2019-01-20 / 阅读(150) / 评论(0)

2018年科学美国人1月

【小龟乐游记】特种神枪手（5）

文本： HQ Gentlemen,we have examined the contents of the bomb.The boys in the E.O.D. have traced the __(1)__ back to a North Korean manufacturer. Hathcock That doesn't make any _(2)_,Sir.Why the hell would they be shipping the thing from Russia ba

发表于:2019-01-23 / 阅读(159) / 评论(0)

小龟乐游记英语短文

SCIENCE IN THE NEWS - Dental Health

SCIENCE IN THE NEWS - November 26, 2002: Dental Health By Nancy Steinbach VOICE ONE: This is Steve Ember. VOICE TWO: And this is Bob Doughty with Science in the News, a VOA Special English program abo

发表于:2019-01-30 / 阅读(152) / 评论(0)

科技之光

学个词 Learn a Word-VOA英语教学 2280-fluoride

今天我们要学的词是 fluoride. Fluoride 氟化物。The U.S. government is lowering the recommended amount of fluoride added to drinking water for the first time in more than 50 years. 美国政府50多年来首次降低饮用水建议添加的氟

发表于:2019-02-02 / 阅读(146) / 评论(0)

英语单词荟萃

演播室访谈：中国需要能源转型，更多的排放量减少

Joining us now in the studio is Wang Tao, a resident scholar of the Carnegie-Tsinghua Center for global policy. He is responsible for the centre's energy and climate program. Q1: China plans to cut carbon emissions relative to GDP by 40 to 45 percent

发表于:2019-02-02 / 阅读(101) / 评论(0)

CCTV9英语新闻2013年11月

2014年CRI 中国扩大马航失联航班的搜索范围敦促日本解释核材料

China says it will expand the search area for the missing jet in the coming days. The search will be expanded to the east and west, with intensive search in the east region and enhanced efforts in the southeast from Saturday, according to the China M

发表于:2019-02-14 / 阅读(142) / 评论(0)

2014CRI中国国际广播电台

【英音模仿秀】中国温室气体排放减少

模仿句子：Are measures to tackle climate change working better than the world thought? Emissions of greenhouse gases stalled last year according to the International Energy Agency, even though the global economy kept expanding. 翻译：应对气候

发表于:2019-02-23 / 阅读(119) / 评论(0)

英音模仿秀

万物简史第358期:孤独的行星(23)

The Romans also flavored their wine with lead, which may be part of the reason they are not the force they used to be. 罗马人也用铅来给酒调味，这也许是他们不再像以往那样强大的部分原因。 As we have seen elsewhere, our

发表于:2019-02-25 / 阅读(121) / 评论(0)

万物简史

TED演讲:如何在核袭击中生存(5)

And what happened was -- when we get in to chapter two of the nuclear threat era, which started back in 1945. 而现实是当我们进入1945年开始的核威胁时期的第二阶段 Chapter two starts in 1991. 第二个阶段是从1991年开始的

发表于:2019-03-04 / 阅读(227) / 评论(0)

TED演讲教育篇

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学英语单词

accelerator urinae

accounting computerization

aelurophile

after-deck

agonizant

airborne contamination

allyl chlorocarbonate