流水不腐，户枢不蠹打一字谜_流水不腐，户枢不蠹答案_流水不腐，户枢不蠹谜底_流水不腐，户枢不蠹的答案_流水不腐，户枢不蠹的谜底_谜语大全及答案

谜语：流水不腐，户枢不蠹【打一成语】