铁壁铜墙 tiěbìtóngqiáng impregnable fortress Definitions Defs Origin Strokes Stroke Words Sentences Sents 铁壁铜墙 鐵壁銅牆 tiěbìtóngqiáng impregnable fortress an extremely strong and solid fortification; an unbreakable defense Frequency Written text 0.027 per million Cross-References Same as 铜墙铁壁 tóngqiángtiěbì Sources Frequency data BCC Corpus (BLCU)
铁壁铜墙 鐵壁銅牆 tiěbìtóngqiáng impregnable fortress an extremely strong and solid fortification; an unbreakable defense Frequency Written text 0.027 per million Cross-References Same as 铜墙铁壁 tóngqiángtiěbì Sources Frequency data BCC Corpus (BLCU)
