I felt my jaws clench and teeth grind together.

我感到双颚紧闭，牙齿紧紧咬在一起。

youdao

You grind the onion and the raw cranberries together.

你把洋葱和新鲜越橘一起磨碎。

《柯林斯英汉双解大词典》

It is a time of national solidarity when the general families come together and forget the day to day grind and celebrates a holiday, for a particular purpose.

这是一个举国团结的时刻，家家户户欢聚一堂，把日常琐事都抛诸脑后，为了一个特别目的来庆祝一个节日。

youdao

The earthquake happened along a line where the Earth's Indo-Australian and Eurasian tectonic plates grind together, in the waters west of Sumatra.

ECONOMIST: Deluged without warning | The

This was the first time I'd ever heard more than 100 musicians bump and grind and totally groove together.

NPR: Getting Hooked on the 'Rite' Sound

When our assembly lines grind to a halt, we work together and we get them going again.

WHITEHOUSE: President Obama Speaks on the Resurgence of the American Auto Industry | The White House