In this system, active protection and passive protection are combined properly, multiple security protection components cooperate dynamically, and thus it is of great flexibility and extensibility.
该防御系统把被动防御技术和主动防御技术有机地结合在一起，多种安全防御组件间动态协作，具有很好的灵活性和可扩展性。
We use PNF stretching which is a combination of passive stretching and isometric contractions designed to increase flexibility more rapidly.
我们采用PNF拉伸，这是一种将被动伸展和等长收缩相结合的方法，旨在快速提高身体的灵活性。
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