Active air defense
un. 积极防空
🧩 词语组成解析
active
['æktiv]
adj. 积极的，活跃的，有生气的;迅速的，敏捷的;有效的，起作用的;
n. [语法]主动语态;积极分子，活跃的人;
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
Although we hadn't met for 25 years, I recognized him the minute I saw him.
尽管我们有25年未见面了，我一看见他就认出来了。
Deeds are males, and words are females.
言柔弱无能，行刚强有力。
This was worse than a terrible secret'; this was a read skeleton! But George was unsympathetic.
这是比“骇人听闻的秘密”更加惊人的东西，这是一具真正的骷髅啊！但乔治却无动于衷。