If you often wake up with a dull headache or sore jaw, you may be grinding your teeth or clenching your jaw while you sleep, a problem called bruxism.

如果你经常醒来的时候有轻微的头痛或下巴肿痛，你可能是在睡觉的时候磨牙或者紧闭牙关，被称为夜间磨牙症。

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Grinding or clenching your teeth (which can intensify if you're stressed) can cause excessive wear and even cracking and chipping.

磨牙和紧要牙齿(应激状态下会加剧)会导致牙齿过度磨损甚至出现裂缝。

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You can practically feel the clenching of teeth in the Android partners' supportive quotes.

你可以从Android阵营其他伙伴的评论中实际感觉到他们在握紧牙齿。

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She wasn't eating. She had terrible stomach pains. She started clenching her jaw and grinding her teeth at night.

VOA: special.2010.04.22

We will no longer accommodate your easily bruised feelings by clenching our teeth and praying it will all get better.

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Lifting your eyebrows makes the device open its grip, clenching your teeth shuts it and moving your lips to the left and right twists the claw, while other motions are currently handled by using a PlayStation 2 controller.

ENGADGET

That tinkling sound you hear behind you is bits of evil gargoyle overlord Nigel Lythgoe's granite teeth crumbling to the floor from over-clenching.

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