单词：plutonium(iii) fluoride
单词：plutonium(iii) fluoride 相关文章
[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
自考英语综合二下册 课文+单词
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
Scientific American(十二)月
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
2015年NPR美国国家公共电台12月
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
科技之光
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
2018年VOA慢速英语(九)月
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
澳洲ABC新闻快递2011年
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
NPR边听边练
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
口腔临床英语对话
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
2015年VOA慢速英语(七)月
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
VOA标准英语2009年(五月)
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
VOA标准英语2010年(十)月
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
2018年科学美国人1月
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
小龟乐游记英语短文
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
科技之光
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
英语单词荟萃
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
CCTV9英语新闻2013年11月
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
2014CRI中国国际广播电台
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
英音模仿秀
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
万物简史
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
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