steam paraffin vehicle

例句：

1. 1. The engine needs to be cooled down before it can start again.
   发动机需要冷却才能再次启动。
2. 2. Steam is a common way to heat water for cooking.
   蒸汽是常见的加热水用于烹饪的方式。
3. 3. The hot air rises and condenses into steam.
   热空气上升并凝结成蒸汽。