steam-boiler

例句：

1. 1.The steam-boiler is used to heat water for cooking.
   蒸汽锅炉用于加热水用于烹饪。
2. 2. The steam-boiler was a crucial part of the old coal-fired power plants.
   蒸汽锅炉是旧的燃煤发电厂的关键部分。
3. 3.The engineer inspected the steam-boiler and found no signs of leakage.
   工程师检查了蒸汽锅炉，没有发现泄漏的迹象。