launches v.发起；推出（新产品）；发射；使(船)下水n.发射；产品推介launched v.发起；推出（新产品）；发射；使(船)下水n.发射；产品推介launch (v.) laughter (n.) laughs v.发笑；笑；嘲笑n.笑声；笑；笑料laughing-stock (n.) laughing (n.) laughable (adj.) laugh (v.) laugh v. 笑，发出笑声；笑着说 n. 笑（声）；引人发笑的事或人lauds (n.) laudatory (adj.) laudator temporis acti laudation (n.) laudanum (n.) laudable (adj.) laud (v.) latticework (n.) lattice (n.) latterly (adv.)