translation.en: By measuring the students' smiles, researchers were able to predict how fulfilling and long-lasting a subject's marriage would be,  how well she would score on standardized tests of well-being, and how inspiring she would be to others.
translation.zh: 通过衡量学生的微笑 研究者们得以预测 一个研究对象的婚姻 持续时间与美满程度 她在幸福感标准考试中 能够得多少分 以及她能给其他人带来多少启发