over worn过度: excessive; over; undue; ana- ...磨损: wear and tear; abrasive wear ...的: 4次方是 The fourth power of 2 i ...过度磨损: abnorm hoeher verschleiss; excessive wear; over wear=overwear; overwear钻头过度磨损: bit excessive wear下载手机词典可随时随地查词查翻译