桅灯

例句：

1. 1. The sailors used tohang their lanterns on themasthead to signal for help.
   水手们过去会在桅杆上挂灯笼来求救。
2. 2. The captain ordered all the shipsto turn off their lights as it wasdark outside.
   船长下令所有船只在天黑前关闭灯光，外面很黑。
3. 3.The crew had to work in complete darkness, with only the lanternson the mast providing any light.
   船员们必须在完全黑暗中工作，只有桅杆上的灯笼提供任何光线。