people able to laying when they speaking,but you will know are they telling the trueth by their body laguage,therefore,you able to understand people's body lauage,then you understand yourself and othe...哈其实刚刚那个已经够简单的了我是有个词没看懂觉得太高深orz。。。。。。哪个是你吗？。。。我本身单词量就没很多，所以用高大上的单词的不是我的。 哈哈 很高兴能帮到你！