convoy ship

例句：

1. 1. The convoy ship was carrying supplies to the aid station.
   护航舰正在运送物资到援助站。
2. 2.The convoy ship was under attack by enemy submarines.
   护航舰遭到了敌人的潜艇攻击。
3. 3. The convoy ship was a symbol of national strength and courage.
   护航舰是国家力量和勇气的象征。