Iraqi security forces were placed on high alert and American aircraft —unpiloted reconnaissance drones flying low, and fighter jets roaring high above —crossed the capital.
伊拉克安全部队处于高警戒状态，美国空军在首都上空穿梭，无人驾驶侦察机低空飞行，战斗喷气机高空呼啸。
Iraqi security forces were placed on high alert and American aircraft —unpiloted reconnaissance drones flying low, and fighter jets roaring high above —crossed the capital.
伊拉克安全部队处于高警戒状态，美国空军在首都上空穿梭，无人驾驶侦察机低空飞行，战斗喷气机高空呼啸。
In addition, the USAF continues to fund development work of the Aerojet (formerly Atlantic Research) Variable Flow Ducted Rocket ramjet system as a future propulsion option for an extended range AAM.
此外，美国空军继续投资于
空喷气研究所（原来的大西洋研究所）的可变喷流管火箭发
机系统，将其作为增程空空导弹的未来推进选项。
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成，部分未经过人工审核，其表达内容亦不代表本软件的观点；若发现问题，欢迎向我们指正。
