limit switches guarding progressive die

例句：

1. 1. The car's engine is controlled by a limit switch.
   汽车的引擎由一个限位开关控制。
2. 2.The elevator has limit switches that prevent it from going up and down too quickly.
   电梯有限制开关，防止它快速上升和下降。
3. 3. The machine's safety feature includes limit switches to prevent overheating.
   这台机器的安全特性包括限位开关，以防止过热。