绷脸

tā běng liǎn shuō huà

她绷脸说话。

She spoke with an appearance of stern.

tā yī zhí běng liǎn huà yě bù shuō

他一直绷脸，话也不说。

He put a long face and said nothing.

bù guǎn tā men xiào zhe hái shì běng liǎn dōu ràng rén jué de hěn gān gà

不管他们笑着还是绷脸，都让人觉得很尴尬。

Whether they smile or frown, it's embarrassing.