lackluster

adj. 无光泽的，呆滞的

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, laconic, laconically, laconism, lacquer, lacrimose, lacrosse, lactate, lactation, lactic, lactic acid, lactose, lacuna, lacy, lad, ladder, laddie, laden, Ladies, ladle, lady,