windsail

例句：

1. 1.The windsail catches the breeze and propels the boat forward.
   风帆捕捉到风力，推动船只前进。
2. 2.The sailors are busy repairing the damaged sails.
   水手们正在忙于修理损坏的帆。
3. 3.The ship's sails billow in the wind, creating a picturesque scene.
   船帆在风中飘扬，营造出一幅如画的景象。