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- Group4：Use a pot with water.Put a tree leaf on it.Heat the water.When the steam vaporizes onto the leaf, we can catch the water . (拿一只锅子，锅子上方放一树叶，下面用火烧，当蒸汽蒸发到树叶上，就喝这水了。
- A cloud is a mass of vapor in the sky. 云是天空中的水汽团。
- Group1：Use a pot with water .Put a tree leaf on it .Then heat the water .The steam vaporizes onto the leaf .The steam on the leaf drops into the coconut .At last , we can catch the fresh water . (拿一只锅子，锅子上方放一树叶，下面用火烧，当蒸汽蒸发到树叶上，树叶上的水珠滴到下面的椰子壳里，就取到了淡水。
- The steam tug takes canal boats and barges in tow. 驳船后面拖着小艇和平底船。
- Pure steam is a dry and invisible vapor . 纯蒸汽是干而看不见的汽体。
- The mirror fogged up with the steam. 镜子因蒙上水气而模糊不清。
- The engines are driven by steam. 这些发动机是由蒸汽驱动的。
- Parents must let children blow off steam sometimes. 做父母的有时必须让孩寸们吵吵闹闹，发泄发泄。
- The movement continued to pick up steam. 这场运动继续在加速进行。
- Chemicals that produce a noxious vapor when mixed. 化学物质混合后会放出有毒气体
- In1768 the first steam engine appeared. 在1768年出现了第一部蒸汽机。
- Water can be changed into vapor when heated. 水被加热时，可以变成水蒸汽。
- When water boils it turns into steam. 水沸腾而变成蒸汽。
- Ice, snow and steam are different forms of water. 冰、雪和蒸汽是水的不同形态。
- A liquid condensed from vapor in distillation. 蒸馏液; 馏出物在蒸馏中，从蒸汽浓缩的液体
- The steam has fogged the mirror. 水汽布满了镜子。
- The steam escaped with a loud hissing noise. 蒸汽发出很大的嘶嘶声冒了出 来。
- They kept up a good head of steam. 他们把蒸气压力保持在所需的水平上。
- Something, such as air or vapor, that is exhaled. 散发物以气体或蒸汽形式发散出的东西
- Heat evaporates water into steam. 水受热变成水蒸汽。
