同根派生 英汉例句用作名词 (n.)The aircraft is powered by a jet engine.这架飞机由喷气发动机驱动。The rockets give the planes and missiles enoughspeed to make the ramjet engine workable.这种助推火箭为飞机和导弹提供足够的速度，以使冲压式喷气发动机可以开动工作。