labor-saving device編輯正在努力提供更完整的內容，建議 20 分鐘後再回來看看labor-saving devicelabor-saving device — 名詞名詞1. a device that reduces the amount of work needed1.名詞釋義省力設備a device that reduces the amount of work needed例句The dishwasher is a wonderful labor-saving device.