单词：parts per million carbon
单词：parts per million carbon 相关文章
A Silent Killer: Carbon Monoxide Poisoning 沉默的杀手:一氧化碳中毒 From VOA Learning English, this is Science in the News. Im Bob Doughty. And Im June Simms. Winter has brought cold weather to many parts of Earths northern hemisphere. With
2013年VOA慢速英语(十二)月
And by the time you all reach your billionth second here on earth when you're a little over six months into your 31st year 你们也会等到十亿位变动的那一刻到时你们大约是31岁半过一点 We will probably be over 9 billion and perh
公众人物毕业演讲
> 58 菌类植物产生于几十亿年前 DATE=8/24/01 TITLE=ENVIRONMENT REPORT - Early Plant Study BYLINE=Cynthia Kirk （Start at 1’00” ）This is Bill White with the VOA Special English ENVIRONM
自然探索
That's the sound of clean coal. Well, cleaner coal. A relatively small unit attached to the smokestack at the Mountaineer Power Plant in West Virginia is capturing some 1.5 percent of the carbon dioxide the coal-fired plant would otherwise belch into
Scientific American(十一)月
This is Scientific American's 60-Second Science, I'm Christie Nicholson. Got a minute? During the last ice age our problem was too little carbon. Unlike today where too much carbon is causing global warming. Past glacial ages occurred partly because
Scientific American(七)月
Bugs 虫子 What are bugs? Bugs usually have thick skin. 什么是虫子？它们通常有厚厚的外壳。 There are many kinds of bugs. 虫子有很多种。 Some bugs have body parts. 有些虫子有身体部位。 For example, antibodies have th
与美国小学生一起学英文第10册
SCIENCE IN THE NEWS - A Silent Killer Carbon Monoxide Poisoning This is SCIENCE IN THE NEWS, in VOA Special English. I'm Christopher Cruise. And I'm Bob Doughty. Winter has brought cold weather to many parts of Earths northern hemisphere. With the co
2013年VOA慢速英语(三)月
Kyoto Protocol Winds Down As Delegates Head To Doha As delegates from 190 countries head for Doha to try to forge a new deal on tackling global warming, the Kyoto Protocol - signed in 1997 - is due to expire at the end of the year. That deal sets bin
VOA标准英语2012年(十一月)
New Guinea is a vast island nestled close to the continental landmass of Australia. As we move south and east, to smaller, more distant islands, the wildlife becomes even more unusual.
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手机坏了，你是选择扔掉重新换个还是拿去修理一下呢？修理一些重新投入使用会给你省下不少钱..... Rob: Hello and welcome to 6 Minute English, I'm Rob and with me is Jen. Jen: Hello Rob. Rob I'm having a problem wi
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This is SCIENCE IN THE NEWS, in VOA Special English. I'm Christopher Cruise. And I'm Bob Doughty. Winter has brought cold weather to many parts of Earths northern hemisphere. With the cold comes a danger as old as mans knowledge of fire -- death or i
英语语言学习
GWEN IFILL: There's yet another new revelation in General Motors' mass recalls over faulty ignition switches. Internal e-mails show GM ordered half-a-million replacement switches nearly two months before telling safety regulators about the problem. T
PBS访谈商业系列
While torrential rains continue to pound south China, it's a different story in central and northern parts of the country over the past couple of months, with dry weather causing droughts in some places. The situation was improved in parts of north C
cctv9英语新闻2016年
The Minister of Climate Change, Nick Smith, gave some strange information about our carbon emissions yesterday. (See September 23rd 2008 for information about the Emissions Trading Scheme.) Last year we put too much carbon into the atmosphere and wou
新西兰英语
台湾籍旅美老师今天交给我们的句子是： The impact of CO2 at 2500 parts per million on the human brain is the equivalent of a blood alcohol level of 0.08. 二氧化碳浓度为0.25% 对大脑的影响程度，相当于酒测值0.08。
留美老师带你每日说英文
The State Council, China's cabinet, has released its timetable to upgrade fuel quality nationwide before 2017. The new standard for petrol and diesel, with sulphur content within 10 parts per million, is expected to be in practice nationwide by 2017.
英闻天下
Altogether there is about twenty thousand times as much carbon locked away in the Earth's rocks as in the atmosphere. 总的来说，被关在地球岩石里的碳，大约相当于大气里的2000倍。 Eventually much of that limestone will end up
万物简史
By 1958, when people in lab coats started to pay attention to it, it had risen to 315 parts per million. 到1958年实验室人员开始重视这个问题的时候，那个数字已经上升到百万分之三百一十五。 Today it is over 360 parts
万物简史
D You are what you eat. This saying has provided scientists with clues(线索)about the diet of hominids- our early relatives of 3 million years ago. Studying carbon atoms(碳原子)locked up in tooth
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