大桅帆

例句：

1. 1. The captain used a big sail to reach the island.
   船长使用一个大帆到达了那个岛。
2. 2. The sailors had to work hard to set up the big sail.
   水手们不得不努力工作来设置这个大帆。
3. 3. The big sail was a symbol of their achievement.
   这个大帆是他们成就的象征。