labour-saving

adj [usu attrib 通常作定语] designed to reduce the amount of work or effort needed to do sth 省力的; 节省劳力的: labour-saving devices, eg a lawn-mower, a washing-machine 节省劳力的机械（如刈草机、 洗衣机）.

labia, labial, labiate, labile, labor, labor union, labor-intensive, laboratory, labored, laborer, laborious, laboriously, laboriousness, labour, labour (US labor), labour along, labour camp, Labour Day (US Labor Day), Labour Exchange, labour-intensive, laboured (US labored), labourer, labourer (US laborer), Labrador, laburnum, labyrinth, labyrinthine, lace, lace-ups, lacerate, laceration, lachrymal, lachrymose, lack, lack in, lack-lustre, lackadaisical, lackadaisically, lackey, lacking,