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air defense的英文翻譯是什麼意思，詞典釋義與在線翻譯：
英英釋義
Noun:
-
defensive measures designed to destroy attacking enemy aircraft or missiles or to nullify their effectiveness
air defense的用法和樣例：
例句
用作名詞 (n.)
- Here in Haifa, air sirens continue to sound.
防空警報仍未在海法撤銷。 - All lights are blacked out during air defence exercises.
在防空演習時對一切燈火都實行管制。
辭彙搭配
- air defense artillery 防空炮
- air defense warning conditions 空防預警狀況...
