watertight

adj. /ˈwɑːtərtaɪt/ C1

不漏水的；严密的

Made so tightly that water cannot enter or leak out.

仙境例句

The Dodo wished for a watertight boat, but it had only an old hat.

渡渡鸟想要一条不漏水的小船，可它只有一顶旧帽子。