lethargic

adj. 嗜眠性 [症] 的; 无气力的,不活泼的; 感觉迟钝的

let on (about sth/that...) (to sb), let oneself go, let out, let pass, let sb off (with sth), let sb out, let sb through, let sb. in, let sb. into, let sb. out, let slide, let sth in, let sth into sth, let up, let's, let-down, let-up, let...down, lethal, lethally, lethargically, lethargy, letter, letter of credit, letter-bomb, letter-box, letterhead, lettering, letterpress, letters, letting, lettuce, leucocyte (US leukocyte), leucotomy, leukaemia (US leukemia), levee, level, level-crossing, level-headed, levelheaded,