单词：vpm (volume-parts per million)
单词：vpm (volume-parts per million) 相关文章
This is the VOA Special English Development Report. Workers clean up lead paint at a building in Providence, Rhode Island in 2006. A new study shows that lead-based paint remains a worldwide threat to public health. Paint containing lead is a major
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By Brian Padden Irbil, Iraq 27 September 2007 Recent outbreaks of cholera in parts of Iraq highlight the need for basic services like clean water.Development projects in much of the country have been delayed because of the deteriorating security situ
2007年VOA标准英语（九月）
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
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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
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Welcome to Thursday's edition of CNN student news. It's good to see you. I'm Carl Azuz at the CNN Center.First up, at least 20 people were injured yesterday at a high school in Pennsylvania. Some of them very seriously, and one student is being held
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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.
跟着英剧练发音
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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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
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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
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VP Galliani will stay at Milan, says Berlusconi MILAN, Oct. 2 (Xinhua) -- AC Milan owner and President Silvio Berlusconi confirmed Tuesday that club's Vice-President Adriano Galliani will remain at San Siro. The pair, who have been working together f
英语新闻
CARACAS, Jan. 15 (Xinhua) -- Venezuela's Vice President Nicolas Maduro Tuesday said President Hugo Chavez is making progress in recovering from his recent cancer surgery in Havana, Cuba. We can say that our commander is climbing the hill, he is advan
英语新闻
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
Ann. 陈是在北京ABC美国公司工作的年青人。今天，他收到一张请帖。可是他不懂请帖上RSVP这几个字母的意思。所以他就去问公司里的一位美籍华人Mary。 (Office ambience) 陈：Mary，美国公司三星请
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WASHINGTON, Aug. 10 (Xinhua) -- U.S. Republican presidential candidate Mitt Romney has picked Wisconsin Rep. Paul Ryan as his vice presidential running mate, U.S. media reported Friday, citing Republican sources. A formal announcement would be made a
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WASHINGTON, Nov. 24 (Xinhua) -- As part of the Obama administration's continued efforts, U.S. Vice President Joe Biden on Wednesday wrote about the urgency to pass this year in the Senate the new Strategic Arms Reduction Treaty (START) signed with Ru
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BEIJING, March 23 (Xinhua) -- Vice President Xi Jinping on Friday pledged to boost the long-term, healthy and stable development of China-Japan relations. Xi made the remark while meeting with a delegation of the Democratic Party of Japan (DPJ) heade
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WASHINGTON, Aug. 16 (Xinhua) -- The White House on Thursday said President Barack Obama will stick to his Vice President Joe Biden as running mate, after comments by Biden prompted Republican calls for Obama to change his running mate. White House Sp
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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
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
WASHINGTON, Feb. 14 (Xinhua) -- Chinese Vice President Xi Jinping met here Tuesday with U.S. President Barack Obama at the White House and delivered to him a letter from Chinese President Hu Jintao. Hu said in the letter that he would like to make jo
英语新闻