Passive air defense
un. 消极防空
🧩 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;
🗣️ 情景例句
I never want to see you again.
我再也不想见你了。
It's a poor mouse that has only on hole.
鼠只有一洞，必先把命送。
Don't give me your attitude.
别跟我摆架子。