Celfume

例句：

1. 1. The steam fromthe kettle has reached the boiling point.
   水壶里的蒸汽已经达到了沸点。
2. 2.The vapor rises up and fillsthe room with a musty smell.
   蒸汽上升，房间里弥漫着一股霉味。
3. 3.The steam engine was invented to power factories.
   蒸汽机被发明用来为工厂提供动力。