短语词组短语wear -off conditions 磨损工况friction wear -off 摩擦磨损wear wear off 耗损accelerated wear off test 快速磨损试验wear off the fat 减肥pill wear off 起球脱落To wear off 损耗i wear off 渐渐减少wear off detail 逐渐消逝;慢慢消失 返回 wear off