heavy-duty词源中文解释 "耐用的,强壮的",1903年; 参见 heavy(形容词)+ duty。 heavy-duty_计算机行业词汇 【修】重载,高功[效]率 heavy-duty词源英文解释 The first known use of heavy-duty was in 1914 heavy-duty儿童词典英英释义 heavy hydrogennoun ...