My face with a smile, that moment, I understand my mother loves me.

我的脸上露出了笑容，那一刻，我才懂得妈妈是爱我的。

youdao

A logo was designed for food packages certified to contain iodized salt: a red dot and a curved line in a circle, meant to represent a face with a smile so big that the eyes are squeezed shut.

认被证过的含碘盐食品包装上的标志被设计成：一个圆圈中有一个红点和一条弧线。这个代表着一张笑容灿烂得连眼睛都找不到的笑脸。

youdao

He greeted all his guests with a fixed smile on his face.

他对所有的客人都以他的一贯笑容相迎。

《牛津词典》

The mechanic is a tall wiry man with a youthful face and a ready smile.

NEWYORKER: Baptizing the Gun

We passed a couple of stilt houses, and a bent woman with a leathery lined face suddenly crinkled into a smile and called out a greeting.

BBC: Piecing together puzzles in Cambodia

Cobbs also hit two free throws to build Cal's cushion in the closing seconds, allowing Crabbe to walk to the free throw line with a huge smile on his face for a shot that he missed but didn't matter.

NPR: Cal Beats No. 7 Arizona 77-69 For Big Road Win