convoy in ice

例句：

1. 1. The ice convoy was the only way to reach the island.
   冰上的船队是唯一到达岛屿的方式。
2. 2.The ice convoy was carrying supplies for the winter.
   冰上的船队正在运送冬季所需的物资。
3. 3. The ice convoy was making its way through the frozen sea.
   冰上的船队正穿越冰冻的海面。