快餐食客、新闻主播、短信发信人，所有人都在微笑，微笑，微笑。

Fast food eaters, news anchors, text messengers, all smiling, smiling, smiling.

youdao

微笑，微笑，微笑，在对的时机。

Smile, smile, smile, in the right time.

youdao

每一种文化都有问候式微笑，开心的微笑，腼腆的微笑，不同还在于，你是怎么被抚养大，你身边人如何。

Every culture is going to have Pan Am smiles, happiness smiles, coy smiles, but the variation of that sort is something which will vary as a result of how you're raised and the people around you.

youdao

A real happiness smile, what's known as a Duchenne smile, after a neurophysiologist who studied it, involves moving the eyes.

真正开心的微笑是杜乡式微笑，在一个神经心理学者研究后发现，包括眨眼睛。

耶鲁公开课 - 心理学导论课程节选

And the best part I would have to say about it is the smiles I put on everybody's faces.

让我说，最好的一点就是我能让人人都微笑，开心。

我就是超人 - SpeakingMax英语口语达人

If it's a true happiness smile, that's actually bodes better for the relationship than a Pan Am, or greeting smile.

如果是一个真正开心的微笑，对这段感情来说是个好兆头,比问候式微笑好的多。

耶鲁公开课 - 心理学导论课程节选