exhaust steam moisture

例句：

1. 1.The exhaust steam from the engine is a significant source of pollution.
   发动机的排气蒸汽是一个重要的污染源。
2. 2. The steam from the boiler provides hot water for domestic use.
   锅炉产生的蒸汽用于家庭供暖。
3. 3. The moisture in the air contributes to the formation of clouds and precipitation.
   空气中的水分有助于云的形成和降水。