pre·hen·sion /priˈhɛn(t)ʃən/
  抓住,理解
  pre·hen·sion /prɪˈhɛnʧən/ 名詞
  理解,掌握,抓握,捕捉
  Pre·hen·sion n.  The act of taking hold, seizing, or grasping, as with the hand or other member.
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  prehension
       n : the act of gripping something firmly with the hands [syn: grasping,
            taking hold, seizing]