flynut

例句：

1. 1. The car's flywheel is the main source of power.
   汽车的飞轮是主要的动力来源。
2. 2.The engineer designed a special flywheel to increase the engine's efficiency.
   工程师设计了一个特殊的飞轮来提高发动机的效率。
3. 3.The train's flywheel was damaged during the accident.
   火车的飞轮在事故中受损。