根据奥巴马的计划，波兰将建设一个不同类型的导弹防御拦系统，在稍后的时间里其将作为移动导弹防御系统的一部分，日期可能会延后到2018年。
Under the Obama plan, Poland would host a different type of missile defense interceptors as part of a more mobile system and at a later date, probably not until 2018.
东风21d导弹拥有无以伦比对强大的防御移动目标的精密打击的能力-美国海军计划者一直争夺对付的能力。
The DF 21d's uniqueness is in its ability to hit a powerfully defended moving target with pinpoint precision — a capability U.S. naval planners are scrambling to deal with.
可移动破碎袖子是用作防御目的需要。
The removable fragmentation sleeve was used as required for defensive purposes.
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