Do what you think might help others feel good, for example, say hello or smile.

做你认为可以帮助他人感觉良好的事情，例如，打招呼或微笑。

youdao

Everybody can be a good citizen, because in many cases a friendly smile is all that is needed to build a better world.

每个人都可以成为一个好公民，因为在很多情况下，一个友好的微笑是建立一个更美好的世界所需要的全部。

youdao

Each time I kept him away from us by giving him a sunny smile or a little wave, as if to assure him we were in a good state.

每次让他离开时我都给他一个灿烂的微笑或一个小小的挥手，好像是为了让他相信我们正处于一个很好的状态。

youdao

Looks like the Newton boy'sgot a big smile for you. Yeah, he's a good buddy.

VOA: standard.other

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

Smile. Have a good time.

微笑，享受美好时光。

哈佛公开课 - 幸福课课程节选

I've learned when things aren't good to smile and say 'I love you' and we go on.

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It was the most enjoyable time - when I think of The Good Life, I smile.

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We appreciate good service, a smile, maybe some advice or tips, and a nice handshake on the way out.

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