Airproof
a. 不透气的, 气密的\\nvt. 使不透气, 使气密
✅ 同义词
🗣️ 情景例句
It's time I was off.
我该走了。
Please sign a copy of our Sales Contract No.156 enclosed here in duplicate and return to us for our file.
请会签第156号销售合同一式两份中的一份，将它寄回我方存档。
OK. Who's first? Ma Lili!
好。第一个是谁？马莉莉！