前桅中桅帆

例句：

1. 1. The ship's sails were set up for thefirst time, and the crew was busyadjusting the masts and yards.
   船的帆被首次设置起来，船员们忙着调整桅杆和绳索。
2. 2. Thecaptain ordered the sailors to repair thedamaged sails before they could be replaced.
   船长命令水手们在损坏的帆被替换之前修理它们。
3. 3. The wind was strong enoughto lift the sails, but thewaves made it difficult to keep them aloft.
   风足够强，可以扬起帆，但波浪使它们难以保持升空。