jump clutch

例句：

1. 1. The car's engine needs to be jumped to start it.
   汽车的引擎需要跳启动。
2. 2. The jump clutch is a crucial component in the transmission system.
   跳离合器是传动系统的一个关键部件。
3. 3. When the car was parked, the jump clutch was accidentally disengaged.
   当汽车停放时，跳离合器意外地被脱开。