Smile, smile, smile, in the right time.

微笑，微笑，微笑，在对的时机。

youdao

Some of the best known research on smiling is about how people judge an authentic smile - the so-called 'Duchenne smile' or the 'crinkly-eyed smile'.

一些最知名的对微笑的研究都是关于人们怎么辨认一个真诚的微笑-又称杜乡的微笑①或鱼尾纹微笑。

youdao

Women smile more than men: Generally, women smile more than men, but when they participate in similar work or social roles, they smile the same amount.

女性比男性笑的多：一般情况下，女性比男性笑的多，但是在相似的工作或社会角色中，两者则相差无几。

youdao

But the look on everyone's face, when you are finished and packing, it is the best smile in the world;

VOA: special.2009.03.22

And by his smile, I knew that sullen hall,-- By his dead smile I knew we stood in Hell.

看着他的笑，我想起了阴沉压抑的礼堂-,看着他的笑，我想起了阴沉压抑的礼堂。

耶鲁公开课 - 现代诗歌课程节选

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

Have you ever wondered why being around children who smile frequently makes you smile more often?

FORBES: The Untapped Power Of Smiling

It still makes me smile to make my wife smile, and I never get tired trying.

FORBES: Note to Self on New Year's Eve: "You Are What You Write"

Luda was about to answer with a sympathetic smile, but the smile died in midair.

NEWYORKER: Luda and Milena