rudder horn

例句：

1. 1. The crew used the rudder horn to signal for help.
   船员们用舵角号发出求救信号。
2. 2. The captain ordered the rudderhorn to be sounded at the firstsign of danger.
   船长命令在第一次危险迹象出现时吹响舵角号。
3. 3.The old ship's rudderhorn was a treasured heirloom passed down through generations.
   这艘旧船的舵角号是世代相传的宝贵遗物。