词语

户枢不蠹门轴不受虫蛀。比喻常运动的东西不容易受侵蚀。例流水不腐户枢不蠹，以其劳动不息也。——《云笈七签》英a door-hinge is never worm-eaten;

流水不腐，户枢不蠹常流的水不发臭常转的门轴不遭虫蛀。比喻经常运动生命力才能持久才有旺盛的活力。英Running water is never stale and a door-hinges never get worm-eaten—practice keep one always fit;