◐ 탕지철성(湯池鐵城/汤池铁城) ◑ tāng shi tiě chéng

▶ 汤 끓인 물 탕 池 못 지 铁 쇠 철 城 성 성

▶ 방비가 아주 견고한 성. 금성철벽. 철옹성. 방비가 매우 튼튼한(난공불락의) 성. 形容城池牢不可破。亦比喻言谈无懈可击。 boiling moat and iron city

▶ [출전] 南朝·宋·刘义庆《世说新语·文学》:“殷中军虽思虑通长,然于才性偏精,忽言及四本,便若汤池铁城,无可攻之势。”

[동의어] 금성탕지(金城汤池)

[반의어] 부감일격(不堪一击)





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