working chamber of caisson

例句：

1. 1.The caisson was filled with water to keep it from sinking.
   沉箱被注满水以防止它下沉。
2. 2.The caisson was used for storing cargo until the ship reached its destination.
   沉箱用于储存货物，直到船只到达目的地。
3. 3.The caisson was a crucial part of the ship's construction.
   沉箱是船只建造中至关重要的一部分。