很多婴儿到一岁大时才开始长牙。

Many infants do not cut their first tooth until they are a year old.

这个男孩的牙上有一个洞。

There's a cavity in the boy's tooth.

他得戴着牙箍矫正牙齿的咬合。

He has to wear a brace to correct his bite.

他们做了这副牙的石膏模型作鉴别之用。

They took a plaster cast of the teeth for identification purposes.

那条狗龇着牙低声吼叫。

The dog bared its teeth in a snarl.

她张开没牙的嘴巴对我们笑了笑。

She gave us a toothless grin.

你刷过牙了吗？

Have you cleaned your teeth?

他突然笑了出来，露出了刚箍过的牙。

He suddenly smiled, revealing teeth that had recently been capped

石器时代的移居者用羊的牙做成项链。

Stone Age settlers fashioned necklaces from sheep's teeth.

我在想汤姆是不是在别的地方整过牙。

I wonder if Tom ever had his teeth fixed anywhere else.

牙齿和牙龈之间会滋生牙斑。

Deposits of plaque build up between the tooth and the gum.

亚历克丝攥紧拳头，牙咬得咯咯响。

Alex clenched her fists and gritted her teeth