您要查找的是不是：
- A cloud is a condensation of water vapour. 云是由水蒸汽凝缩而成的。
- A gaseous anesthetic, such as nitrous oxide. 气体麻醉剂一种气态的麻醉剂，如一氧化二氮。
- nitrous vapours 亚硝蒸气
- 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。
- nitrous vapour 亚硝蒸气
- His brain was clouded by vapours and dreams. 他的脑子里充满空想和梦幻。
- It can change water into vapour. 它能把水变成蒸汽。
- The sun exhales vapours from the sea. 阳光使海水蒸发。
- Vapours steam upward from the earth. 水汽从地面上升起。
- There is a rainbow in its cooling vapours. 在它的逐渐冷却的水汽中出现一条彩虹。
- 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。
- 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.
- Strange vapours rose from the dark lake. 怪雾由湖面升起。
- It has studied the action of hydrogen peroxide on nitrous acid. 它研究了过氧化氢对亚硝酸的作用。
- Vapours from other continent arrived upon the wind. 远洲异国的水汽,乘风来到这里。
- 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。
- Vapours steam upward from the earth . 水汽从地面上升起。
