蒸汽机

例句：

1. 1. Steam engines are used to power factories and factories.
   蒸汽机用于驱动工厂和工厂。
2. 2. The steam engine was invented by James Watt in the 18th century.
   蒸汽机是由詹姆斯·瓦特在18世纪发明的。
3. 3. The steam engine is a complex machine that uses steam to power machinery.
   蒸汽机是一种复杂的机器，使用蒸汽来驱动机械。