water soldier

例句：

1. 1. The soldiers were marching in formation to the front of the battlefield.
   士兵们正在整齐地行进到战场前线。
2. 2.The water soldier was the first to reach the shore.
   那位水兵是第一个到达岸边的。
3. 3. He is a brave and skilled water soldier who has saved many lives.
   他是一个勇敢且技术娴熟的水兵，已经拯救了许多生命。