Seeing the puzzled look on his face, she tried a different tack.

看到他脸上困惑的神情，她试了一个不同的方法。

《柯林斯英汉双解大词典》

She had a worried look on her face.

她一脸担忧的样子。

《牛津词典》

There was an amused look on the President's face.

总统面带愉悦的神情。

《牛津词典》

But the look on everyone's face, when you are finished and packing, it is the best smile in the world;

VOA: special.2009.03.22

And there is a very big difference between these two simplicities, even though on the face of it, they may at times look similar.

这两种简单性之间有很大的区别，尽管乍看起来，他们有时也许是相似的。

哈佛公开课 - 幸福课课程节选

So these are just some pictures to show you what the smallpox lesions look like on the face of a child, and then distributed over the whole body of an adult, to give you some better idea of what kind of a disease this was.

所以这里给你们展示一些图片,这就是小孩脸上的天花伤痕,这是天花遍布成人全身的样子,它能让你们更好的理解,天花是一种什么样的疾病

耶鲁公开课 - 生物医学工程探索课程节选

From the look on his face he could obviously smell the beer on my breath.

CNN: ASIANOW - TIME Asia | Walkabout: Bad & Bitter

The woman got a worried look on her face and said, all right, that's enough.

NPR: Crumpet the Elf Reads from Santaland Diaries

Seeing the look on his face, I sighed and promptly headed for the exit.

CNN: A theme park survival guide