adj.水密的，无懈可击的，防水的，严密的，不透水的，天衣无缝的

We're doing some repairs to make the roof more watertight.
我们在进行一些修理，使得屋顶更防水。
Eric's arguments are watertight.
埃里克的论据非常严密。
The container is designed to be watertight, ensuring that no liquid can escape or enter.
这个容器设计成防水的，保证没有任何液体能逃逸或进入。
A good raincoat should be both waterproof and watertight, keeping you completely dry in heavy rain.
一件好的雨衣应该是既防水又密封的，在大雨中能让你完全保持干燥。
The submarine's hull is engineered to be absolutely watertight, enabling it to withstand the immense pressure of the deep sea.
潜艇的船体被设计成绝对密不透水，使它能够承受深海的巨大压力。
The new roofing material provides a watertight seal, preventing any leaks during storms.
新型屋顶材料提供了防水密封，防止暴风雨期间漏水。
The jar's lid has a rubber gasket that creates a watertight seal when screwed on tightly.
罐子的盖子有一个橡胶垫圈，当紧紧拧上时可形成防水密封。
The boat's compartments are designed as watertight to ensure that even if one section is damaged, the rest will remain afloat.
船的隔间设计为水密的，以确保即使有一部分受损，其余部分仍能浮在水面。
The watertight door in the ship closes automatically in case of flooding, isolating the affected area.
船上的水密门在发生洪水时会自动关闭，隔离受影响区域。
The swimming pool was constructed with a watertight liner to prevent water seepage into the ground.
游泳池采用防水衬层建造，以防止水分渗入地下。
A well-built dam must have a watertight foundation to effectively hold back the massive volume of water.
一座建造良好的大坝必须有防水的基础，才能有效地阻挡大量的水。
The waterproofing membrane applied to the basement walls guarantees a watertight environment, protecting against moisture and potential flooding.
应用于地下室墙壁的防水膜保证了防水环境，防止潮气和潜在的洪水侵袭。