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- A cloud is a condensation of water vapour. 云是由水蒸汽凝缩而成的。
- A cloud is a mass of vapour in the sky. 云是天空中的水汽团。
- Water can be changed into vapour when heated. 水被加热时，可以变成水蒸汽。
- A tyre expands when you pump air into it. 轮胎一打气就鼓起来。
- Lashing velocity of pump is concerned with nature of air. 泵的抽气速率与气体的性质有关。
- This tire is flat; you didn't pump enough air in. 这个轮胎没气了;你并没打足气。
- We have a pump for drawing water from the well. 我们用一个水泵从井里抽水。
- It can change water into vapour. 它能把水变成蒸汽。
- The heart is analogous to a pump. 心脏和水泵有相似之处。
- Can you lend me your bicycle pump? 能把你的打气筒借给我吗？
- The hot vapour spouted from a rusted pipe. 热蒸汽从一个生了锈的管子里喷了出来。
- Here is an old-fashioned pump for drawing water from a well. 这里有一个旧式水泵可从井里抽水。
- Then a brown vapour is given off. 这时会放出一种棕色的气体。
- He sniffed the vapour up (through his nose). 他（用鼻子）吸入蒸气.
- You will need to pump hard for several minutes to fill the tank. 你需用泵著实抽吸几分钟，才能把油箱灌满。
- Petrol forms vapour above a certain temperature. 高于一定的温度汽油就形成蒸气。
- When heated,water change into vapour. 给水加热时，它会变成蒸气。
- Can you lend me a pump to blow up my bicycle tyres? 你能借给我个打气筒给车胎打打气吗?
- Heated, the water turns to vapour. 加热时，水会变成蒸汽。
- mercury vapour pump 汞汽泵
