I felt my jaws clench and teeth grind together.

我感到双颚紧闭，牙齿紧紧咬在一起。

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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