单词:liquid-oxygen temperature
单词:liquid-oxygen temperature 相关文章
First, let's start by busting one myth about yawning. A lot of people have the misconception that we yawn because our brains need more oxygen. However, several studies have shown that no matter how little oxygen is around a person, they won't yawn mo
By Gary Garriott Broadcast: July 22, 2003 This is Robert Covent with the VOA Special English Agriculture Report. Many farmers around the world are 1)composting to improve their soil so they can produc
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
Mars 火星 Mars is a planet. 火星是行星。 It is next to the Earth. 它紧邻地球。 Its size is about one fourth of the Earth. 它约有四分之一个地球大。 Mars is not far from the Earth, but the environment is very different. 火星离
The ice bucket challenge may seem cool if you live in a place which is usually quite hot, but for those who dwell in a cold climate the idea is probably less impressive. 冰桶挑战看起来相当酷,但前提是你处在热带地区。而对于那些
Hot Drinks Linked to Cancer 热饮料或与癌症相关 From VOA Learning English, this is the Health Lifestyle report. VOA英语学习健康及生活方式报道。 The next time you make yourself a hot cup of tea or coffee, you might want to let it