Dentists advise their patients to brush and floss regularly to prevent their teeth from decaying.

牙医建的病人定期刷牙并用洁牙线剔牙，以防止蛀牙。

He suffered torments from his aching teeth.

牙痛得难受。

He picked his teeth with a toothpick.

用牙签剔牙。

The man smiled, revealing perfect white teeth.

那个男人微笑 ，露出雪白整齐的牙。

She clenched her teeth and refused to move.

她咬牙关不肯挪动一步。

Parliament must grit its teeth and take action.

会必须痛下决心，采取行动。

She clenched her teeth when she was operated on.

在被动手术时她咬了牙关。

The bandit bared his teeth in an insolent smile.

那匪徒龇牙咧嘴地狞笑。

My brother is fretful because he is cutting his teeth.

我的小弟弟直发脾气, 因为正在长牙。

He’ll be gnashing his teeth when he hears that we lost the contract.

要是听说我丟了这份合同，准会气得咬牙切。

The dentist is treating my teeth.

牙科医生给我治牙。

Some of her teeth were very badly decayed.

她有些牙烂得很厉害。

They are closely related as lips and teeth.

唇相依。

He usually has a cigar vised in his teeth.

通常用牙一支雪茄。

Bacteria sticks to food debris in the teeth, causing decay.

细菌附在牙缝中的食物残渣上，道致蛀牙。

The teeth on the gears mesh as they turn round.

转动时轮上的与相啮合。

He picked up a leaflet about care of the teeth.

拾起一张宣传保护牙的传单。

His teeth were stained with nicotine from years of smoking.

的牙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牙,在放大镜、显微镜下观察结构。

The dentist could detect no sign of decay in her teeth.

牙医在她的牙上找不到蛀蚀的迹象。