He was grinning from ear to ear.

他笑得合不拢嘴。

《牛津词典》

Many mothers smiled from ear to ear when they got the news that children could go back to school.

听到孩子们可以重返学校的消息，许多母亲都笑得合不拢嘴。

youdao

I was still smiling from ear to ear while writing this.

在写这件事的时候，我还在开心地笑。

youdao

You're looking at it and feels like someone's over your shoulder talking in your ear, as opposed to someone at the blackboard, that's distant from you."

VOA: standard.2010.03.26

Who took a ball, the vesicle, and he transplanted from the embryo, the ear region, to a limb.

他从胚胎的耳朵部分中,取出一个泡囊移植到腕部。

斯坦福公开课 - 7个颠覆你思想的演讲课程节选

"Lana grinned from ear to ear when she was holding them, " her husband said.

CNN: STORY HIGHLIGHTS

The government's special advisers were beaming from ear to ear and have a right to.

BBC: IMF set out a 'Plan B' for George Osborne

"Especially with the three goals I scored, " added the Senegal star, grinning from ear to ear.

BBC: Momo ponders his future