If you want to live to a grand old age, then smile - and make sure you mean it.

如果你想长命百岁，那么微笑吧——并且确保你发自内心。

youdao

If you can make funny (but not ugly) faces, make a funny (but not ugly) face and then smile.

如果你会做鬼脸（但不丑的那种），那就做个鬼脸然后冲她微笑。

youdao

I saw the first girl talking 5 courteously to the old woman and then smile as she gave her a reassuring hug.

我看到第一个女孩彬彬有礼地和那个老妇人交谈，然后笑着给她一个让她安心的拥抱。

youdao

Then comes hope with a sweet smile and says softly, 'There is joy in forgetting one's self.'

VOA: special.2009.11.15

Then when a stranger approaches or someone else approaches there they'll tend to give more of a greeting smile.

当陌生人或其他人接近时,他们是问候式微笑。

耶鲁公开课 - 心理学导论课程节选

Then when they stand up and face the crowds, there's a big smile.

但当他们面对人群站立时，他们露出了大大的微笑。

耶鲁公开课 - 心理学导论课程节选

They shake their heads up and down as an act of validation, and then they smile and laugh.

FORBES: It Worked So Well, I Stopped Doing It...

And then a smile formed.

FORBES: A 1980s Cold War Kid's View From Moscow

She gave me a quick smile, then turned her gaze back to Terri.

NEWYORKER: Beginners