He's just smiling.

他只是微笑。

youdao

Thinking the day I sleep 12 hours a day, just smiling!

想想以前自己一天睡12小时就觉得好笑！

youdao

And Joey's just smiling at him, you couldn't melt butter in his mouth.

乔伊只是微微对他笑着，你简直无法在他的嘴巴里融化黄油。

youdao

And it was a remarkable reaction of just patting us on the back, smiling and ushering us up to the front so that we could see it."

VOA: standard.2010.07.26

Professor Paul Bloom: I don't know if that's--The question is, "Is there a difference between smiling with your teeth versus just your lips closed?"

我不知道是否，问题是，微笑露齿与不露齿有不同吗“

耶鲁公开课 - 心理学导论课程节选

She just kept smiling.

NEWYORKER: Swimming

My overall feeling is that we are just not consistently conscious of smiling and the benefits it brings to ourselves and others, otherwise we would do it more often.

FORBES: New Data on Smiling

This person just did the online equivalent of smiling politely, excusing herself to go to the bathroom and leaving you alone at the bar.

CNN: Don't be offended by online-dating rejection