watertight barrier

例句：

1. 1.The construction of the new bridge was designed to be watertight and strong enough to withstand heavy traffic.
   这座新桥的设计是防水的，足够坚固以承受重交通。
2. 2. The tank is equipped with a watertight barrier that prevents leakage during operation.
   该罐配备了一个防水屏障，以防止在操作过程中泄漏。
3. 3.To ensure safety, all equipment must have a watertight barrier in place.
   为确保安全，所有设备都必须有防水屏障。