Try to imagine a world in which somebody's smile exists but their body doesn't.

试图想象一个世界里某人的微笑存在,而身体不存在

耶鲁公开课 - 死亡课程节选

You could--It's not difficult to study smiles in the real world.

在现实世界研究微笑不难。

耶鲁公开课 - 心理学导论课程节选

One--Oh. Well, one is that smiles are universal.

微笑是世界性的语言。

耶鲁公开课 - 心理学导论课程节选