Railway semaphore signal
01
铁路臂板信号机, 铁路移动臂信号
a visual signaling device that uses a moving arm to show train drivers if they should stop or proceed
语法信息
有生性状态
无生命
形态构成
复杂复合词
可数
复数形式
railway semaphore signals
例子
The train slowed down as the railway semaphore signal showed a red arm, indicating a stop.
当铁路臂板信号机显示红色臂板时,火车减速,表示停止。



























