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

youdao

She gives me a friendly smile.

她给了我一个友好的微笑。

youdao

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

VOA: special.2009.11.24

Language was the only barrier, but a friendly smile bulldozed that wall.

NPR: Untold Stories of Kindness

Expect a friendly smile and sudden pat on the back.

FORBES: Six Scientific Ways to Suck up Successfully

Be friendly and smile.

FORBES: 10 Rules for Olympic Athletes On Turning Gold Medals Into Real Gold