单词：for gases and liquids
单词：for gases and liquids 相关文章
This is Scientific Americans 60-Second Science. Im Steve Mirsky. Got a minute? To keep your car purring, you have to change the oil. Such maintenance produces eight billion gallons of used motor oil annually. Some waste oil does get re-refined to pro
Scientific American(三)月
On a restricted site in northern Wisconsin, the hissing you hear is helping scientists see the future. Inside towering rings of pipes, aspen, birch, and sugar maples feed on measured diets of greenhouse gases. Our studies were looking at what forest
国家地理2007年
Rich cities around the world are largely responsible for greenhouse gas emissions, says a new study. The study measures emissions based on the use of goods and services, such as food, clothing and electronics, by people living inside cities. It inclu
2018年VOA慢速英语(三)月
Gas 气体 There are three different kinds of matter. They are solids, liquids and gases. 物质分三种：固体、液体和气体。 Gas has no shape, so you can't touch gas. 气体本无形，所以你触摸不到。 Gas moves very freely. 气体能
与美国小学生一起学英文第5册
Scientists Develop New Ways to Track Greenhouse Gases With more than 18 million people living, working and driving in Los Angeles, the city often is covered in a hazy layer of smog. Stan Sander, senior research scientist at the U.S. space agency's Je
VOA标准英语2013年(七月)
December 29 12月29日 Read it! 读读看！ Oh, no! Everyone is getting sick. 糟糕！大家都生病了。 Taylor has a headache. 泰乐头痛， She is also starting to cough a lot. 也开始不断咳嗽。 Alex's stomach doesn't feel very good. 亚
大家说英语