water-tight seal

例句：

1. 1.The new door has a water-tight seal to prevent leaks.
   新门有一个水密密封，以防止泄漏。
2. 2.The waterproof seal on the window prevented moisture from seeping in.
   窗户上的防水密封阻止了水分渗入。
3. 3. The waterproof seal on the roof is designed to keep rain out.
   屋顶的防水密封设计用来挡雨水。