龈，树胶;Dentists advise their patients to brush and floss regularly to prevent their teeth from decaying.
医建议他们的病人定期刷并用洁线剔，以防止蛀。
)；
处理数；齿数目（false tooth的复数）；暂，上尖，乳齿；蜕齿；暂Dentists advise their patients to brush and floss regularly to prevent their teeth from decaying.
医建议他们的病人定期刷并用洁线剔，以防止蛀。
He suffered torments from his aching teeth.
他痛得难受。
He picked his teeth with a toothpick.
他用签剔。
The man smiled, revealing perfect white teeth.
那个男人微笑着 ，露出雪白整齐的齿。
She clenched her teeth and refused to move.
她咬紧关不肯挪动一步。
Parliament must grit its teeth and take action.
议会必须痛下决心，采取行动。
She clenched her teeth when she was operated on.
在被动手术时她咬紧了关。
The bandit bared his teeth in an insolent smile.
那匪徒龇
狞笑。
My brother is fretful because he is cutting his teeth.
我的小弟弟直发脾气, 因为正在长。
He’ll be gnashing his teeth when he hears that we lost the contract.
他要是听说我们丟了这份合同，准会气得咬切齿。
The dentist is treating my teeth.
科医生给我治。
Some of her teeth were very badly decayed.
她有些齿烂得很厉害。
They are closely related as lips and teeth.
他们唇齿相依。
He usually has a cigar vised in his teeth.
他通常用齿叼着一支雪茄。
Bacteria sticks to food debris in the teeth, causing decay.
细菌附着在缝中的食物残渣上，道致蛀。
The teeth on the gears mesh as they turn round.
转动时齿轮上的齿与齿相啮合。
He picked up a leaflet about care of the teeth.
他拾起一张宣传保护齿的传单。
His teeth were stained with nicotine from years of smoking.
他的齿因多年抽烟而被尼古丁染黄了。
13 deform root groove teeth were observed with macroscopy and microscopiy.
13个有畸形根面沟的上颌侧切,在放大镜、显微镜下观察结构。
The dentist could detect no sign of decay in her teeth.
医在她的齿上找不到蛀蚀的迹象。
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