I surveyed the options.

我仔细审视了各个选项。

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航空喷气研所（原来大西洋研所）可变喷流管火箭动机系统，将其作空空导弹未来推进选项。