translation.en: The finding supported Darwin's theory, by showing that facial feedback modifies the neural processing of emotional content in the brain, in a way that helps us feel better when we smile.
translation.zh: 这个发现应证了达尔文的理论 表明面部反馈 控制了神经 对大脑中情绪信息的处理 这就让我们在微笑时心情变得更好