Train horn
01
火车喇叭, 列车汽笛
a loud device used by trains to signal their approach or presence
例子
When the train horn sounded, everyone at the crossing knew to stay clear of the tracks.
当火车喇叭响起时，道口上的每个人都知道要远离轨道。
The piercing sound of the train horn echoed through the valley, warning hikers of the approaching locomotive.
火车喇叭的刺耳声音在山谷中回荡，警告徒步旅行者火车即将到来。
