单词：air-breathing engine
air-breathing engine的用法和样例：
例句
- 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。
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