氟化镍(II) {二氟化镍}

Nobody Knows the Difference

School 1) volunteers don’t get paid money, but sometimes we receive special gifts. One morning, just before Christmas vacation, I was selling tickets to our grade school’s last evening performance

发表于:2018-11-28 / 阅读(151) / 评论(0)

疯狂英语2002年

英语顺口溜

英语中的俚语、口语或顺口溜很多，它们的意义，往往与字面意义不同，有时也不合文法的结构，所以正确了解和灵活使用，是学习英语者的难题之一。下面即是常见的一些，供读者参考。

发表于:2018-11-29 / 阅读(116) / 评论(0)

英语阅读理解

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(121) / 评论(0)

Scientific American(十二)月

listentothis 初级英语听力lesson 2

Joanna: Where did you go yesterday? Frank: I went to Croydon. Joanna: Did you go shopping? Frank: No, I went for an interview. Joanna: Oh, did you get a job? Frank: Yes, I got a job as a Management Tr

发表于:2018-12-03 / 阅读(102) / 评论(0)

听力每日练习补充

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(89) / 评论(0)

科技之光

VOA慢速英语2013 Is His Name Santa Claus, Saint Nicholas, Kris Kringle or Pelznickel? Who Cares, So Long As He Brings Gifts!

Is His Name Santa Claus, Saint Nicholas, Kris Kringle or Pelznickel? Who Cares, So Long As He Brings Gifts! Now, the VOA Special English program Words and Their Stories. Santa Claus is someone who will remain in the hearts of children forever. He is

发表于:2018-12-07 / 阅读(52) / 评论(0)

2013年VOA慢速英语(十二)月

美国俚语:nickel-and-dime 零打碎敲地长期消耗

dime是值十美分的硬币。 dime的价值虽然是nickel的两倍，但是dime也只是一枚很小的硬币，而且dime跟 nickel相比是既小又薄，原因是过去曾经用比镍贵重得多的银子来铸造dime。 Nickel-and-dime既可以

发表于:2018-12-12 / 阅读(89) / 评论(0)

美国俚语

2007年NPR美国国家公共电台四月-In 'Nickel's Chicago,' a Lost City's Lost

Historic preservationists are often passionate in their zeal to keep the wrecking ball from beloved buildings. One man even died in the process. Richard Nickel spent years with his camera, documenting and arguing against the demolition of buildings

发表于:2018-12-19 / 阅读(130) / 评论(0)

2007年NPR美国国家公共电台

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(118) / 评论(0)

口腔临床英语对话

越狱第一季:第五十七期

Sucre夜里从牢房的水池后面溜到狱警休息室里，在他们挖的洞上浇上一层水泥，以掩人耳目。他知道自己回牢房的路上很可能被抓住，所以事先想办法弄到一条女式内裤，万一被抓到就说是为了等女朋友扔东西过来。他果然被抓住了，下面是狱警和Sucre的对话。 [00:41.87]Sucre

发表于:2019-01-01 / 阅读(85) / 评论(0)

越狱第一季

美国俚语:Nickel and Dime Someone什么意思?

一个客户在电话线上和我就一笔生意讨价还价，硬要在我的报价上要砍掉一角钱，当时我和他据理力争，他说：I'm not trying to nickel and dime you. 我当时就冲口回答：I don't need your nickel and dime.（我

发表于:2019-01-08 / 阅读(111) / 评论(0)

美国俚语

美国习惯用语:302 nickel and dime; on a dime

我们上一次讲了由penny 也就是分币组成的几个习惯用语。美国人用的硬币除了penny还有好几种。例如，价值比penny高一点儿的有五分和一毛的硬币。它们是: nickel and dime。不论Nickel还是dime都是零

发表于:2019-01-11 / 阅读(134) / 评论(0)

美国习惯用语

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(103) / 评论(0)

VOA标准英语2010年(十)月

英美人天天都在说的4000句 96:if i had a nickel for..

[00:00]P：This is Mary Ellen Jenkins. So, Mike, how do you and Joey know each other anyway? [00:05]M：How do I and Joey know each other? Wow, if I had a nickel for every time somebody has asked me that. [00:11]J：From school. [00:12]M：Yeah, we m

发表于:2019-01-14 / 阅读(77) / 评论(0)

英美人天天都在说的4000句:跟着影视学最真实的口语

英语俚语天天说第47期:只涉小钱的,微不足道的 Nickel-and-dime

介绍: NICKLE N I C K LE 镍是美元中五分钱的硬币 Dime D I M E是美元中十分钱的铸币 dime是值十美分的硬币。 dime的价值虽然是nickel的两倍，但是dime也只是一枚很小的硬币，而且dime跟 nickel相比是既

发表于:2019-01-17 / 阅读(78) / 评论(0)

英语俚语天天说

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(88) / 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(104) / 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(95) / 评论(0)

英语单词荟萃

英语小达人 284 Nickel or Dime?

Nickel or Dime? 5分钱还是10分钱？ Little Johnny used to hang out at the local corner store. The owner didn't know what Johnny's problem was, but the older boys would constantly tease him. 小约翰尼过去常在街角的商店附近闲逛。店

发表于:2019-02-17 / 阅读(98) / 评论(0)

英语小达人

英语小达人 283 How You Made Money

How You Made Money 你怎么赚的钱 A young man asked an old rich man how he made his money. 一个年轻人问一位富有的老人是怎样赚到钱的。 The old guy fingered his worsted wool vest and said, Well, son, it was 1930. The depth of t

发表于:2019-02-17 / 阅读(79) / 评论(0)

英语小达人

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