我知道人们可以用一个微笑或点头来代替这些话。

I know people can replace these words with a smile or nod.

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船长薄薄的唇边露出一个微笑，然后在脸上漾开。

A thin-lipped smile spread over the captain's face.

《柯林斯英汉双解大词典》

别忘了每天给你的父母一个微笑。

Don't forget to give your parents a smile every day.

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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

In Alice in Wonderland, the Cheshire Cat disappears and all we have left, the last thing that disappears, is the smile.

在《爱丽丝漫游仙境》里面,笑脸猫消失不见了而剩下的,最后一个东西,就是微笑

耶鲁公开课 - 死亡课程节选

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