airtight

形容词

1. 1

   密封的、气密的、不透气的

   Store the coffee beans in an airtight container to keep them fresh.

   把咖啡豆放在密封容器里才能保持新鲜。

2. 2

   无懈可击的、滴水不漏的

   Her alibi was airtight, so the police let her go.

   她的不在场证明滴水不漏，警方只好放她走。