steam bronze

例句：

1. 1. The engine needs to be cleanedregularly to prevent the accumulation of steam.
   发动机需要定期清理，以防止蒸汽的积累。
2. 2.The steam from boiling water is used toheat buildings.
   沸腾的水产生的蒸汽用于加热建筑物。
3. 3. Steam is a common form of energyin many industries.
   蒸汽是许多工业中常见的能源形式。