Air defense
n. 防空; 空防
🧩 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
Thanks a lot.
多谢。
Better late than never.
迟做总比不做好。
I haven't forgotten anything, she said to herself. But then it was time to pay for them.
“我什么也没忘记，”她自言自语地说。但接着该是她付钱的时候了。