- air defense; antiaircraft; antiaircraft defence
- 防空兵: anti aircraft air force; anti-aircraft air forces
- 防空船: ack-ack ship
- 防空的: antiaircraft
- 防空灯: blackout light
- 防空洞: 1.(防空袭的洞) air-raid shelter; bomb shelter; bomb shelter; bombproof dugout; abri2.(掩护坏人的场所) a hideout for evildoers3.(掩护坏思想的事物) a cover for wrong thoughts
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