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- Water contains hydrogen and oxygen. 水含有氢和氧。
- Oxygen enters into many compound bodies. 氧是许多化合物的组成部分。
- oxygen biofuels 生物质燃料
- Mars is too dry and poor in oxygen. 火星上面过于干燥，并且缺乏氧气。
- Water is composed of hydrogen and oxygen. 水由氢和氧组成。
- Fish take in oxygen through their gills. 鱼通过鳃摄取氧气。
- The oxygen react vigorously with the impurity in the iron. 氧气与铁中的杂质发生剧烈的化学反应。
- The oxygen workshop caught fire and set off a chain of explosions. 氧气车间着了火，引起了一连串的爆炸。
- Plants can absorb carbon dioxide and release oxygen. 植物可以吸收二氧化碳释放氧气。
- So is the use of food crops to produce biofuels. 因此，是利用粮食作物生产生物燃料。
- Water is composed of the elements hydrogen and oxygen. 水是由氢元素和氧元素组成的。
- There was a shortage of oxygen at the top of the mountain. 山顶上缺氧。
- "I was truly obsessed with biofuel," he said. 卢拉说：“我对生物燃料的确是过于着迷了。
- An organism, such as a bacterium, requiring oxygen to live. 好氧菌需要氧气生存的有机体，例如细菌
- Oxygen masks are used in aircraft only in emergencies. 飞机上的氧气面具只用於紧急情况。
- An oxygen mask will come down from overhead in case of an emergency. 若发生紧急情况，头顶上会降下一只氧气面罩。
- It adapts itself to water with low oxygen content. 它能适应含氧量少的水。
- Global production of biofuels consists primarily of ethanol. 全球的生物燃料产品主要是乙醇。
- An oxide containing three oxygen atoms per molecule. 三氧化物每个分子中含有三个氧原子的氧化物
