这种重要的双向交流时的感觉还不能完全用大脑的神经键来解释，这也是天使之所以能够继续进入到21世纪的主要原因。
This sense of vital two-way communication, still not wholly explained by the synapses of the brain, is the chief reason that angels keep intruding into the 21st century.
输入想说的话，请按回车键即轻松发表，每个人都有一个思想，我们一起交流，就有了更多的经验和知识。
Input wanted to say, press the enter key that made it easy, everyone has an ideology, to join us in the exchange, have more experience and knowledge.
结果发现：对于MP3播放器的外观来说，被试最关注的区域是功能键区域，即就是关注MP3播放器的人机交流功能；
The results showed that:Participants were more interested in function keys area than other areas of MP3 players. That′s to say, they were concerned about the function of intercommunion.
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