ADJ If a container is airtight, its lid fits so tightly that no air can get in or out. 密封的
Store the cookies in an airtight container.
把饼干存放在一个密封的容器里。
ADJ An airtight alibi, case, argument, or agreement is one that has been so carefully put together that nobody will be able to find a fault in it. 无懈可击的 [美国英语]
The containment structure is a hermetically (air tight) sealed, very thick structure made of steel and concrete.
它是高度密封，用钢铁和混凝土制成的非常厚的壁障。
The third containment is a hermetically (air tight) sealed, very thick bubble of the strongest steel and concrete.
第三个容器是严格密封的，用很厚的钢铁和混凝土打造的气泡状容器。
We also need to clean up spills as soon as they occur, and store food in air-tight containers.
我们还需要尽快清理溢出的液体，并将食物储存在密封的容器中。
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