horn

他按响了喇叭以提醒行人。

He honked his ___horn to alert the pedestrians.

船只的雾角声在薄雾中回荡。

The ship's fog ___horn echoed through the mist.

汽车的喇叭用于向其他司机发出信号。

The car's ___horn is used to signal other drivers.