标签:ozone 相关文章
In 2008 astronomers discovered surprising amounts of water molecules where planets were forming near young stars. But how, they wondered, could those molecules survive? They should have been destroyed by ultraviolet radiation. In theory, planetary du
A: 欢迎大家来到这期的美语训练班! 我是杨琳! B: 我是Mike! 杨琳,来告诉大家今天都要学什么? A: 没问题! 今天,咱们要来去体验一下刺激的赛车比赛,聊聊继续深造学习,还要告诉你怎么说飞速
UNIT 8 Protecting Our Environment Part I Pre-Reading Task Listen to the recording two or three times and then think over the following questions: 1. What kind of paradise is described in the song? 2.
And beyond that, on behalf of your mother and sisters, I pledge that we, your blood family, will do all we can to continue the imaginative and loving way in which you were steerling these two exceptional young men so that their souls are not simply i
Sunscreened Plants 遮光植物 A NASA researcher is finding that alfalfa plants grow more poorly when exposed to UVB -- ultraviolet B radiation from the sun. Learn more about sunscreened plants -- today on Earth and Sky. JB: This is Earth and Sky. Eart
From NPR News in Washington. Im Paul Brown. European stock markets opened lower today, and that performance mirrors whats been happening elsewhere. Worries about the US economy have sent the dollar tumbling to a 12-year low against the Japanese yen
12岁女孩在联合国的演讲 Hello, I'm Severn Suzuki speaking for E.C.O. - The Environmental Children's Organisation. 大家好,我是Severn Suzuki,我代表儿童环境组织来此演讲。 We are a group of twelve and thirteen-year-olds fr
[00:-1.00]carbon monoxide motorway roadwork limit [00:-1.50]一氧化碳 汽车高速公路 长跑运动训练 界限 [00:-2.00]speed limit cone traffic cone zebra crossing [00:-2.50]速度限制 锥形物 锥形交通 斑马线 [00:-3.00]addiction c
Agriculture Report - Honey Bee Losses Still a Problem in US Beekeepers reported losing about 35 percent of their hives in the fall and winter of last year. Transcript of radio broadcast: 12 May 2008 This is the VOA Special English Agriculture Report
9 Environmental matters 9 环境问题 Some useful phrases. 有用表达。 Listen to the recording and repeat. 听录音,跟读。 Plastics aren't bio-degradable. 塑料制品不能生物降解。 They don't break down easily in the environment. 它
12岁的铃木瑟玟(Severn Suzuki)在1992年里约世界高峰会上,对全世界环境部长发出警语,她的演说简单扼要却直指人心,要求「大人们」对于环保要说到做到,否则就是对下一代的不负责任。
The United Nations' World Meteorological Organization says there is a close relationship between weather-climate systems and global pollution. The organization says these relationships also affect people's health. 这个星期一是世界气象日,联
Brazil's National Institute of Amazonian Research and Germany's Max Planck Institute have joined efforts to build the Amazon Tall Tower Observatory (ATTO). Located along the waterways of a northern tributary of the Amazon River, the observatory was f
得克萨斯州废气排放量仍居全美居首 HOUSTON, Oct. 23 (Xinhua) -- Texas remains to be the biggest greenhouse gas emitter in the United States, according to a report released Wednesday by the U.S. Environmental Protection Agency (EPA). Tex
Ozone layer(臭氧层) 'is no longer disappearing and will return to full strength by 2048', says UN report. The ozone layer is no longer disappearing and could be back to full strength by the middle of this century, UN scientists have confirmed(
There is nothing unusual about energy like coals and oils being consumed, principally because economic development depends on natural resources all the time. But what is happening today is extraordinary judged by the standards of the past. It is ener
On its website, a history of the company makes no mention of leador indeed of Thomas Midgleybut simply refers to the original product as containing a certain combination of chemicals. 在它的网站上,公司的历史没有提及铅──也没有提
Buoyed by the success of leaded gasoline, Midgley now turned to another technological problem of the age. Refrigerators in the 1920s were often appallingly risky because they used dangerous gases that sometimes leaked. One leak from a refrigerator at
备考写作的同学们都了解,在拿到雅思写作题目的时候,常常担心句型写作、语言不够精准。但往往忽略了文章的框架和主题内容。多数同学在备考雅思写作时常常是准备语言,读明白题目,
很多参加gre的考生在做gre写作的时候都没有写提纲的习惯,这是非常不好的。提纲在gre写作当中起到了至关重要的作用。从今天起,我们将对gre issue进行分析,弄清写作思路,这样才能让gre