Treadle
01
踏板, 脚踏杠杆
a lever that is operated with the foot
02
踏板, 接触板
a mechanical device activated by the weight or movement of a train's wheels, typically used to trigger signals or track switches
例子
When a train passes over a treadle, it sends a signal to the control center, informing them of the train's location and direction.
当火车经过踏板时，它会向控制中心发送信号，通知他们火车的位置和方向。
