亚苄二氟;二氟甲基苯

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(185) / 评论(0)

Scientific American(十二)月

听广告学英语-Benz "奔驰"汽车

听广告学英语:Benz 奔驰汽车原文：You walked into the party, like you werewalking onto a yacht. Your hat strategically dipped below one eye, your scarf, it was apricot. You had one eye in the mirror as you watched yorself go, Bart. And all the girls

发表于:2018-12-07 / 阅读(203) / 评论(0)

听广告学英语

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(140) / 评论(0)

科技之光

英语写作中一些有趣的双关语

所谓pun，通常是指利用一个单词的两个含义，或者利用两个特定的单词，达到一语双关的目的。例如在下面这句话里，其中的grave有两个含义，一个是严肃的（形容词），一个是坟墓（名词），

发表于:2018-12-18 / 阅读(130) / 评论(0)

TED演讲视频集

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(174) / 评论(0)

口腔临床英语对话

各大品牌英文介绍-Mercedes-Benz

Mercedes-Benz is a German manufacturer of luxury cars, buses, coaches, and trucks. It is a division of its parent company, Daimler AG. Mercedes-Benz was founded in 1881 and is the oldest car maker around today. Its history includes the first petrol-p

发表于:2019-01-01 / 阅读(154) / 评论(0)

各大品牌英文介绍

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(145) / 评论(0)

2018年科学美国人1月

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(147) / 评论(0)

科技之光

英语中有趣的双关语

所谓pun，通常是指利用一个单词的两个含义，或者利用两个特定的单词，达到“一语双关”的目的。比如下面第一句话，其中的grave有两个含义，一个是“

发表于:2019-02-01 / 阅读(155) / 评论(0)

趣味英语

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(143) / 评论(0)

英语单词荟萃

Fascinating night of Cup action in Spain

MADRID, Jan. 3 (Xinhua) -- Reigning Copa del Rey holders Real Madrid fought back from two goals down to defeat Malaga 3-2 in the first leg of their last 16 Copa del Rey tie. Madrid had trailed 2-0 at half time after goals from Sergio Sanchez and Mart

发表于:2019-02-05 / 阅读(165) / 评论(0)

英语新闻

Real Madrid suffer Higuain injury blow

MADRID, Feb. 22 (Xinhua) -- Real Madrid will be without French international striker Karim Benzema for around three weeks as a result of the groin injury he picked up in his side's 1-1 draw away to CSKA Moscow in the Champions League on Tuesday night

发表于:2019-02-05 / 阅读(167) / 评论(0)

英语新闻

豪车市场遭遇反垄断调查

Industry insiders are suggesting the Chinese government's anti-monopoly investigations of some foreign luxury car brands sold in China are coming to an end. It's being reported that local authorities in Shanghai and Hubei have confirmed infractions b

发表于:2019-02-06 / 阅读(137) / 评论(0)

英语新闻

Real Madrid win second classic in 5 days

MADRID, March 2 (Xinhua) -- Real Madrid took their second victory, a 2-1 win, over eternal rivals, FC Barcelona in just five days on Saturday afternoon in the Santiago Bernabeu Stadium. Although the game had appeared as if it was to be slightly de-ca

发表于:2019-02-08 / 阅读(146) / 评论(0)

英语新闻

AP 2011-02-06

1. President Barack Obama has been busy pushing the message he laid out last night in the State of the Union address. He was in Wisconsin today where he warned the U.S. has fallen down on the job and needs to get serious about winning the future. 2.

发表于:2019-02-11 / 阅读(185) / 评论(0)

美联社新闻一分钟2011(二月)

跟着Gwen学英语之每日早读第275期

Yesterday is history, tomorrow is a mystery, but today is a gift. That is why it is called the present. 语音讲解单词发音 history n. 历史，历史学 mystery n. 秘密，谜；神秘 gift n. 礼物；天赋；赠品连词发音 yesterday i

发表于:2019-02-13 / 阅读(226) / 评论(0)

跟着Gwen学英语之每日早读

Lesson 73-1 Renging a Car 租车

Listen to the dialogues and fill in T for True, F for False. 英语对话1 A:Do you have mid-size car for rent? B:Sorry. All the mid-size cars are rented out. 英语对话2 A:Do you have Mercedes Benz for rent? B:Yes. We have a Mercedes Benz limousin

发表于:2019-02-17 / 阅读(198) / 评论(0)

英语听力练习题

世界经典名车中英文对照

发表于:2019-02-18 / 阅读(123) / 评论(0)

英文语法词汇

英语歌曲：布鲁斯:Rick Ross - Face

饶舌:Fabolous - Everything Everyday Everywhere 相关介绍：经过近一个整整十年,在嘻哈说唱的领域中绝对处于巅峰地位的Fabolous,他将会长出他最具个性的想法.专辑将于2009年7月28 日正式上市.全新的专辑

发表于:2019-02-20 / 阅读(159) / 评论(0)

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alicyclic saturated hydrocarbon