Mr Kim is an ace non-smiler.

金先生无疑是一位冷面高手。

youdao

Okay. Please arbitrarily decide on the smiler.

好，请任意选择微笑者。

youdao

Now, the person who is the mandated smiler, on three, please smile. One, two, three. Okay.

现在，要求微笑的一方，我数到三，微笑，一，二，三。

youdao

Now, the person who is the mandated smiler, on three, please smile. One, two, three. Okay.

现在，要求微笑的一方，我数到三，微笑，一，二，三。

耶鲁公开课 - 心理学导论课程节选

Okay. Please arbitrarily decide on the smiler.

好，请任意选择微笑者。

耶鲁公开课 - 心理学导论课程节选

That will be--No, not at me, at each other, and that will be the person If you are unable to resolve this dispute yes, you two, please--if you are unable to resolve this dispute, the person to the right of me will be the smiler.

这将是，不，不是我，互相看，将是这个人,如果你不能解决这个争端的话,对，你们俩，请，如果不能解决，我右手边为微笑方。

耶鲁公开课 - 心理学导论课程节选

Mimicking a smile and experiencing it physically helps us interpret how genuine a smile is, so that we can understand the real emotional state of the smiler.

FORBES: The Untapped Power Of Smiling

She wasn't much of a smiler, and considering this is a tour about disco, surely one of the most light-hearted, frivolous and fun forms of music, she could have lightened up a little.

BBC: NEWS | UK | Wales | Confessions from a Madonna show