Because a person's tone of voice or facial expression often reflects his mood while in other kinds of communication it's hard for us to perceive the subtle changes of one's emotion.
因为一个人的语音语调或面部表情经常反映了他的情绪，而在其余类型的沟通中我们很难看到一个人的表情的微妙变化。
Facial expressions are significant biological indicators of emotion. We can realize one's emotion state according to the facial expression.
面部表情是一种有效的情绪显示器，通过观察一个人的面部表情，可以了解此人现在的情绪状态。
应用推荐