The market for launching small satellites is presently only partly served by the Pegasus rocket, which is launched at high altitude by a commercial jet aircraft.
在小型卫星的发射这一市场，目前只有天马火箭公司提供一些服务。他们用商务喷气式飞机在高空进行发射。
2
The company seems to have focused all its energy in the last few years in launching its much-delayed mid-sized 787 aircraft, which finally enters service at the end of the summer.
近几年，波音公司似乎将全部精力投在了严重难产的中型机型787的开发中，该机终于在今年夏末正式服役。
3
Steam catapults aren't good for launching small aircraft like unmanned drones that are rapidly taking up a larger share of the military's aerial Arsenal.