词缀en+gine词源，中文意思是n. 发动机，引擎机车，火车头专用装备，器械工具，手段驱动力，推动力

例如

A very severe explosion can damage the crankcase door and cause fire in the engine room.非常剧烈的爆炸会损坏曲轴箱防爆门，引起机仓着火。

These firms are regarded as the engine room of the economy.