地板上他们一直跳舞的地方被磨损了.The floor was badly scuffed up where they had been dancing.若未妥善照料,引擎的部分将会被磨损.The engine parts will wear down if not properly cared for.这些黑漆皮鞋被磨损了.These patent leather shoes scuffed....

“被磨损”的英语可以翻译为：fray ...