船首三角帆

例句：

1. 1. The captain ordered the crew to secure the ship's bowsprit before setting sail.
   船长命令船员在启航前固定船首三角帆。
2. 2. During the storm, the sailors had to work quickly to secure the ship's bowsprit.
   暴风雨中，水手们必须迅速工作来固定船首三角帆。
3. 3. The ship's bowsprit is a crucial part of the navigation system.
   船首三角帆是导航系统的重要组成部分。