lift-off

n vertical take-off of a rocket or spacecraft （火箭或航天器的）发射, 升空, 起飞: We have lift-off. 我们已发射升空.

life-size, life-size, life-sized, life-span, life-style, life-support, life-time, life-work, lifebelt (also lifebuoy), lifeboat, lifeless, lifelessly, lifelessness, lifelike, lifeline, lifelong, lifer, lifestyle, lifetime, lift, lift-attendant, ligament, ligature, light, light bulb, light industry, light meter, light pen, light up, light-coloured, light-fingered, light-headed, light-hearted, light-heartedly, light-heartedness, light-heavyweight, light-sensitive, light-year, lighten, lighter, lighterage,