压舱物

例句：

1. 1.The captain decided to add some extra ballast to the ship to increase its stability during the stormy seas.
   船长决定给船添加一些额外的压舱物，以提高其在暴风雨中的稳定性。
2. 2. The cargo was carefully loaded onto the ship, ensuring that it would not shift or move during the voyage.
   货物被小心地装在船上，确保在航行过程中不会移动。
3. 3. The ballast stones were placed in strategic locations on the ship to provide additional weight and stability.
   压舱石被放置在船的特定位置，以提供额外的重量和稳定性。