氨硫脲,胺苯硫脲,硫醋腙

听一分钟英文：Ozone Layer-臭氧层

I first heard about the ozone layer about twenty years ago. I was still in school. I thought it was interesting, but I didnt take it seriously. It was a bit like science fiction, I mean, how could there be a giant hole in the atmosphere? Over the yea

发表于:2018-12-04 / 阅读(403) / 评论(0)

听一分钟英文-O

英语课程计划-the Preservation of the Ozone Layer

There is a special day to recognize the importance of the ozone layer. In 1995, the United Nations General Assembly decided September 16th is the International Day for the Preservation of the Ozone Layer. This is the date on which countries signed th

发表于:2018-12-29 / 阅读(491) / 评论(0)

英语课程学习计划和讲义

Earth and Sky:Global Warming and Ozone 全球变暖和臭氧

Global Warming and Ozone 全球变暖和臭氧 Could the coming century bring a new threat to the ozone layer? Discover one scientist's model of the effect of global warming and greenhouse gases on ozone -- on today's Earth and Sky. DB: This is Earth and S

发表于:2019-01-02 / 阅读(526) / 评论(0)

(科普英语)Earth and Sky

ENVIRONMENT REPORT - Shrinking Ozone Hole over Antarctica

ENVIRONMENT REPORT - November 1, 2002: Shrinking Ozone Hole over Antarctica By Cynthia Kirk This is the VOA Special English ENVIRONMENT REPORT. Australian researchers say the hole in the ozone layer o

发表于:2019-01-02 / 阅读(371) / 评论(0)

健康与环境

Scientists: Ozone-Eating Chemical Mysteriously Rising

Scientists have found that levels of a now-banned chemical are rising again in Earths atmosphere. The chemical is called CFC-11. It is the second most common kind of CFC, short for chlorofluorocarbon. Chlorofluorocarbons were once widely used in many

发表于:2019-01-03 / 阅读(401) / 评论(0)

2018年VOA慢速英语(五)月

英语歌曲:迈克尔.杰克逊-Ben

迈克尔.杰克逊：ben Ben Ben, the two of us need look no more We both found what we were looking for With a friend to call my own I'll never be alone And you my friend will see You've got a friend in me Ben, you're always running here and there

发表于:2019-01-03 / 阅读(637) / 评论(0)

迈克尔杰克逊经典歌曲

英语动画:哈哈美语 Fun With Sounds：Ben‘s story 2-3

Fun With Sounds：Ben‘s story—在线英语听力室

发表于:2019-01-03 / 阅读(506) / 评论(0)

哈哈美语

Study: Loss of Ozone Slows

By Caty Weaver Broadcast: September 12, 2003 This is Bob Doughty with the VOA Special English Environment Report. Scientists in the United States have reported some good news about the 1)ozone in the

发表于:2019-01-11 / 阅读(472) / 评论(0)

VOA2003（下）-环境与健康

纯正英语一分钟-ozone layer

发表于:2019-01-21 / 阅读(419) / 评论(0)

纯正英语一分钟

不择手段背单词(776) benison 赐福；祝福

benison,n 赐福；祝福＝blessing 【记】ben笨，son儿子。笨儿子。有个笨儿子可不是坏事，那是福气。比如，你的儿子要是阿甘（亿万富翁），你就不用出国了，等着在家享福吧

发表于:2019-01-25 / 阅读(501) / 评论(0)

不择手段背单词

(1)Springtime Ozone Loss

25 大气层中臭氧正日渐稀薄 DATE=3-21-01 TITLE=SCIENCE REPORT - (1)Springtime Ozone Loss BYLINE=George Grow (Start at 1'00

发表于:2019-01-30 / 阅读(632) / 评论(0)

科技之光

HEALTH REPORT – Study Links Ozone Pollution to Increased De

HEALTH REPORT – Study Links Ozone Pollution to Increased Deaths By Cynthia Kirk Broadcast: Wednesday, December 08, 2004 I'm Gwen Outen with the VOA Special English Health Report. American researcher

发表于:2019-01-30 / 阅读(393) / 评论(0)

健康与经济

第43期:来学一首经典英文歌Ben

今天来学习Jackson的一首歌。 Ben, the two of us need look no more 本，我们俩无需再寻觅 We both found what we were looking for 我们已找到我们的所求 With a friend to call my own 有一个属于我自己的朋友 I'll never

发表于:2019-02-07 / 阅读(353) / 评论(0)

卡卡课堂早餐英语

加州英语分级GK Big Ben 04

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发表于:2019-02-10 / 阅读(399) / 评论(0)

加州英语分级GK

加州英语分级GK Big Ben 03

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发表于:2019-02-10 / 阅读(415) / 评论(0)

加州英语分级GK

加州英语分级GK Big Ben 05

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发表于:2019-02-10 / 阅读(442) / 评论(0)

加州英语分级GK

加州英语分级GK Big Ben 02

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发表于:2019-02-10 / 阅读(456) / 评论(0)

加州英语分级GK

加州英语分级GK Big Ben 01

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发表于:2019-02-10 / 阅读(462) / 评论(0)

加州英语分级GK

Big Ben

Big BenBig Ben is not the name of a man. It is a name of the clock. It is in London. London is the capital city of England. The big clock has four faces. So no matter where you stand, you can read the face of the clock. The hands are about four meter

发表于:2019-02-18 / 阅读(364) / 评论(0)

英语美文

影视歌曲：Ben Cocks-Your Firefly

英国伦敦东区哈克尼的音乐家BenCocks创作该曲，并收录2010年发行的《AsHeardIn》专辑中。BenCocks并未接受正规的音乐教育，为人低调，为电影与电视制作音乐。YourFirefly一开始被用作乔治亚电力

发表于:2019-02-20 / 阅读(508) / 评论(0)

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学英语单词

angle of internal friction

arc discharge coating equipment