上述的一切可能需要一段时间才能实现，现有的美国法律禁止轻型飞行器飞跃建筑区，但是马丁说这一切最终会变成现实。
That vision may take some time to come to fruition, as current US laws bar ultralights from flying over built up areas, but Martin said it would eventually become reality.
分析证实Taepodong 2的设计不正确，并且到目前为止没有成功进入第三阶段——能击中美国的一个重要性飞跃。
Analysts believe the Taepodong 2 is inaccurate and so far has failed to reach a third stage, a critical leap to be able to hit the United States.
第四阶段(1999 -现在)，是飞跃阶段。
应用推荐