Entry
銅牆鐵壁
Source
CEDict 100318
Characters
銅 牆 鐵 壁
Miscellaneous
Traditional
銅牆鐵壁
Simplified
铜墙铁壁
Pinyin
tong2 qiang2 tie3 bi4
English
copper wall, iron bastion (idiom); impenetrable defense
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