launch /lɔ:ntʃ/ I. vt. 1. 发射，投射： be successfully launched 成功地发射；launch a missile into outer space 把导弹发射到太空 2. 使(船)下水：launch a ship from a shipyard 使船从船坞下水 3.发动，发起；开办：launch a new enterprise 创办新企业；launch an attack 开始攻击 4. 用于短语动词 launch into（充满激情地）开讲：He launched into his usual long speech about industry and the environment.他打开话闸，开始了他有关工业和污染的长篇老生常谈。‖II. n. ［u］ 发射，下水：the launch of the first space vehicle第一个宇宙发行器的发射；the launch of a new liner 新客轮下水