The dog was gnawing a bone.
那狗在啃骨头。
Rats had gnawed through the cable.
老鼠把电缆咬断了。
There he sat, happily champing his lunch.
他坐在那里，津津有味地吃着午餐。
Seeing his enemy, he gnashed his teeth.
见到仇人，他把牙齿咬得格格作响。 gnash your teeth 这一习语中，表示因愤怒或痛苦而咬牙切齿。
bite
That dog will give you a nasty bite, given half a chance.
只要一有机会，那条狗就会狠咬你一口。
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