Air tightness
[机] 气密度
🧩 词语组成解析
air
[ɛə]
n. 天空;气氛;空运;（简单易记的）曲调;
vt.& vi. 晾晒;烘干;播送;广播;
vt. 使房间通风， 透气;
n. 坚固, 紧密\\n[化] 紧度; 严密度
🗣️ 情景例句
You really must have your wits about your when dealing with such people.
跟这类人打交道，你必须格外警觉。
How many boxes are you going to use?
你要用几盒？
Do you have to water it now?
你一定得现在浇吗？