boat embarkation light

例句：

1. 1. The boat's landing light is on, so we can safely dock.
   船的登陆灯亮了，我们可以安全停泊。
2. 2. The lighthouse at the entrance of the harbor is a crucial navigational aid for ships approaching from the sea.
   港口入口处的灯塔是船只从海上接近时的重要导航辅助。
3. 3. The boat's crew was instructed to turn off the landing light before entering the port.
   船上的工作人员被指示在进入港口前关闭登船口指示灯。