早在2004年，麻省理工的这个研究小组就报道说，亚马孙Piraha人的语言似乎只能表达“1、2和许多”三个概念，而无法对超过2的数进行精准表征。
Back in 2004, the M.I.T. team reported that the Piraha people seemed to have terms that described “one, ” “two, ” or “many.”
隐喻本质上是一种认知活动，语言使用中的隐喻表达式只是人类隐喻性认知方式的表征。
Metaphorization is a epistemological activity in essence. The metaphorical expression in language use is an indication of the metaphorical type of cognition.
应用互易定理推导出了电磁波激励下天线的耦合长度和耦合面积的表达式，这两个物理量可以表征天线的响应特性。
Expressions of the coupling length and the coupling area of an antenna to electromagnetic waves excitation are deduced with the reciprocity theorem.
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