진짜 칼은 빛을 내지( 혹은 품지) 않는다..

이런 뜻의 4자성어를 알려주세요.. 꼭 알고 싶어요..감사합니다.


※) 20200522_youtube.jpg 사자성어 성어TV성어낭독, 성어퀴즈



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