motor-blower

例句：

1. 1. The motor-blower is used to cool the engine after it has been running for a long time.
   发动机风扇用于在长时间运行后冷却发动机。
2. 2.The motor-blower was installed in the factory to ensure that the workers could stay cool during hot summer days.
   工厂安装了发动机风扇，以确保工人在炎热的夏天能够保持凉爽。
3. 3.The motor-blower was responsible for circulating air around the engine, which helped to prevent overheating.
   发动机风扇负责在引擎周围循环空气，这有助于防止过热。