air defense

• n. 防空

英英释义

Noun:

1. defensive measures designed to destroy attacking enemy aircraft or missiles or to nullify their effectiveness

例句

用作名词 (n.)

1. Here in Haifa, air sirens continue to sound.
   防空警报仍未在海法撤销。
2. All lights are blacked out during air defence exercises.
   在防空演习时对一切灯火都实行管制。

词汇搭配

• air defense artillery 防空炮
• air defense warning conditions 空防预警状况...