音标：[ˈklɔ:ri:n ˈflʊərˌaɪd] ；

氟化氯

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(170) / 评论(0)

Scientific American(十二)月

知性英语－How to Take Medicine

For quick relief of upset stomach or acid indigestion caused from too much to eat or drink, drop two tablets in an eight-ounce glass of water. Make sure that the tablets have dissolved completely befo

发表于:2018-12-07 / 阅读(131) / 评论(0)

知性英语

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(132) / 评论(0)

科技之光

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(159) / 评论(0)

口腔临床英语对话

SSS 2009-05-15

This is Scientific Americans 60-second Science, Im Steve Mirsky, got a minute? Friends who had a swimming pool also had a little sign posted that said, We dont swim in your toilet. Please dont pee in our pool. Despite such widespread admonitions, 4/5

发表于:2019-01-08 / 阅读(137) / 评论(0)

Scientific American(五)月

美联社新闻一分钟 2007-03-18

1. Thousands of war protesters converged on Washington today. They marched from the Vietnam War Memorial to the Pentagon to observe the 4th anniversary of the start of the war in Iraq. 2. Meanwhile the violence continues in Iraq. The military says t

发表于:2019-01-08 / 阅读(177) / 评论(0)

美联社新闻一分钟2007

2007年VOA标准英语-Truck Bomber Releases Chlorine Gas in Western I

By Margaret Besheer Baghdad 06 April 2007 Iraqi officials say a suicide bomber has detonated a truck filled with explosives and chlorine gas near the western Iraqi city of Ramadi. At least 27 people were killed and dozens more injured and sickened. F

发表于:2019-01-09 / 阅读(172) / 评论(0)

2007年VOA标准英语（四月）

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

发表于:2019-01-14 / 阅读(139) / 评论(0)

VOA标准英语2010年(十)月

美国国家公共电台 NPR Lethal Pneumonia Outbreak Caused By Low Chlorine In Flint Water

AILSA CHANG, HOST: Scientists announced today that they have figured out the cause of an outbreak of Legionnaires' disease in Flint, Mich., a few years ago. Twelve people died. This was at the start of the city's water crisis. And the problem was a l

发表于:2019-01-16 / 阅读(147) / 评论(0)

2018年NPR美国国家公共电台2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(137) / 评论(0)

2018年科学美国人1月

【文摘】与细菌一起游泳

Everybody loves the swimming pool. But how clean is the water in the average backyard or public pool? If you trust chlorine to take care of germs, you're in for a surprise. Chlorine and other disinfec

发表于:2019-01-26 / 阅读(150) / 评论(0)

阅读空间

万物简史第131期:基本物质(3)

Scheele's one notable shortcoming was a curious insistence on tasting a little of everything he worked with, including such notoriously disagreeable substances as mercury, prussic acid (another of his discoveries), and hydrocyanic acida compound so f

发表于:2019-01-29 / 阅读(111) / 评论(0)

万物简史

万物简史第130期:基本物质(2)

The commercial potential for the stuffwhich soon became known as phosphorus, from Greek and Latin roots meaning light bearingwas not lost on eager businesspeople, but the difficulties of manufacture made it too costly to exploit. An ounce of phosphor

发表于:2019-01-29 / 阅读(124) / 评论(0)

万物简史

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(139) / 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(129) / 评论(0)

英语单词荟萃

联合国调查叙利亚毒气事件

UNITED NATIONSThe U.N. Security Council unanimously agreed Friday to establish a joint investigation mechanism to identify perpetrators of chlorine and other toxic chemical attacks in Syria. It is the first time the council has sought to establish ac

发表于:2019-02-04 / 阅读(89) / 评论(0)

英语新闻

2007年VOA标准英语-Chlorine Gas Attacks in Iraq Injure 350

By Margaret Besheer Irbil, Iraq 17 March 2007 In the volatile Western Iraqi province of Al-Anbar, suicide bombers driving trucks filled with chemicals struck at three different locations late Friday afternoon. U.S. military officials said Saturday at

发表于:2019-02-04 / 阅读(158) / 评论(0)

2007年VOA标准英语（三月）

Coca-Cola apologizes for chlorine-tainted drinks

TAIYUAN, May 4 (Xinhua) -- Coca-Cola Shanxi Beverages Co. Ltd. on Friday announced the resignation of its general manager and the suspension of several employees after admitting traces of chlorine were found in some of its drinks. The company also ma

发表于:2019-02-06 / 阅读(184) / 评论(0)

英语新闻

万物简史第357期:孤独的行星(22)

Oxygen itself is not combustible; it merely facilitates the combus tion of other things. （氧本身是不可燃的，它只是帮助别的东西燃烧。 This is just as well, for if oxygen were corn bustible, each time you lit a match all the air

发表于:2019-02-25 / 阅读(123) / 评论(0)

万物简史

【小龟乐游记】奇异人生（30）

文本： Max: Okay, time for some Chloe cosplay... Chloe: Hey, there you go! Rachel left a bunch of her clothes with me... She's your size. Max: But not quite my _(1)_ . Chloe: Max, you don't have a style yet. At least give it a try. You can always

发表于:2019-02-27 / 阅读(238) / 评论(0)

小龟乐游记英语短文

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