銅牆鐵壁

Chinese

copper wall iron wall; rampart
trad. (銅牆鐵壁) 銅 牆 鐵 壁
simp. (铜墙铁壁) 铜 墙 铁 壁

Pronunciation


Idiom

銅牆鐵壁

  1. impregnable and indestructible wall or barrier
  2. (figuratively) something very firm and indestructible
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