橡胶拐杖头磨穿后应及时更换，并保持干燥。
Rubber crutch tips should be replaced as they wear out, and they should remain dry.
磨损或潮湿的拐杖头会降低其表面张力，增加摔倒危险。
Worn or wet crutch tips decrease surface tension and increase the risk of falling.
磨损或潮湿的拐杖头会降低其表面张力，增加摔倒危险。
Worn or wet crutch tips decrease surface tension and increase the risk of falling.
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