You just smile, wave, wish them well, and move on.

你只需微笑，挥挥手，祝他们好运，然后继续前行。

youdao

Full of energy, upturned mouth. The pain of sorrow and disappointment hidden behind the smile. Some people say bad things about someone in front of you, you just smile.

精神饱满，嘴角上翘。将痛苦忧愁与失望藏于微笑后面。有人在你面前说某人坏话时，你只微笑。

youdao

For example, if you smile, your voice will sound warm and friendly, just the opposite, if you have an angry look on your face, it can make you sound unpleasant.

例如，如果你微笑，你的声音会听起来温暖和友好，相反，如果你脸上有一个生气的表情，它会让你听起来不愉快。

youdao

If you want people to see you as warm and friendly, she says,just smile.

VOA: special.2009.11.24

So, if you smile at somebody, and you just hate their guts but you want to smile at them, it's--unless you're quite gifted it's difficult to fake a really good, really happy smile.

所以，你对某人微笑，你很讨厌他们，但你要对他们微笑，除非你很有天赋,很难去假笑，伪装真正的微笑。

耶鲁公开课 - 心理学导论课程节选

You just can't help but smile throughout the entire show and that's the kind of stuff I enjoy watching.

整部剧让你止不住从头笑到尾，我就是喜欢看这种。

喜欢的电视节目 - SpeakingMax英语口语达人

Abramovich offers you a team and you just smile like nothing happened?

BBC: Grant's chance to silence doubters

No, no, no, you just wave, smile and -- (laughter.) That's how you do it.

WHITEHOUSE: Creating New Jobs by Investing in High-Speed Rail

No offense, sons, but -- (laughter) -- I'm just saying, when you've got wonderful daughters it puts a smile on your face.

WHITEHOUSE: The White House