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

Please, young women, smile or simper or smirk or grin, glower or glare, or just mope about if you like, but for the love of God, please put away the duck face.

年轻女性们，求你们了，微笑、傻笑、假笑或露齿而笑，怒视或瞪视，或者如果你愿意，漫无目的地闲逛都行，看在上帝的份上，别摆那张鸭子脸了。

youdao

Yes, $150 starts off my day! I'm sure if someone could have seen the smile on my face, they would have understood, I shouted in joy, with my poor dog looking at me like I was crazy! Start your morning off thinking you are going to have the best day ever and you just might! I really want to know what will happen next.

是的，150美元开始我的一天！我敢肯定，如果有人能看到我脸上的笑容，他们会明白的，我高兴地喊着，我可怜的狗看着我，好像我疯了一样！早上起床的时候，想着你将会有最棒的一天，你就可能会！我很想知道接下来会发生什么事。

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