10. Eye contact is a powerful mode of communication among humans, and repeated or prolonged eye contact usually serves two main purposes: to convey interest or hostility. If you notice that she looks at you once but doesn't look back, she's not interested. Research has determined that women will continue to send it to you when you've piqued their curiosity.

　　10. 眼神交流是人类的一种相当有力的交流方式，而多次、较长时间的眼神交流通常是表达两种目的：有兴趣或有敌意。如果她只是轻轻瞟你一眼，然后就再也不看你的话，那就是说她对你没兴趣。研究人员发现，如果你激起了女性对你的兴趣，她们会看你很多次，通过这样的方式来让你知道她们对你有兴趣。