A tooth which has been hit hard may discolour.

His tooth had started to throb painfully again.

他的牙又开始抽痛了。

It is almost impossible to find a dentist who will fill a tooth on the National Health.

几乎不可能找到一位愿意接受国民医疗保健来补牙的医师。

The dentist commenced to dig, drill and finally fill the offending tooth.

牙医开始在那颗有问题的牙齿上挖洞，钻孔，直到最后把它补好。

I got an abscess so he took the tooth out.

我牙龈脓肿，所以他就把那颗牙拔掉了。

If a tooth feels very loose, your dentist may recommend that it's taken out.

如果某颗牙松动得很厉害，牙医会建议把它拔掉。

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

很多婴儿到一岁大时才开始长牙。

Aren't I a bit long in the tooth to start being an undergraduate?

我现在才去读大学本科不是有点太老了吗？

This tooth is a bit wonky.

这颗牙有点松动了.

He has a bad abscess under that tooth.

他那颗牙下边有一处脓肿.

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

这个男孩的牙上有一个洞.

The dentist drilled my tooth.

牙医在我的牙齿上钻孔.

I have a filling in the tooth.

我补牙了.

He yanked out a loose tooth.

他猛拔出一颗松动了的牙.

The tooth has become a bit loose.

牙齿有点活络.

A bad tooth may cause an abscess on the gums.

一颗病牙可使牙床脓肿.

They were fighting tooth and nail.

他们猛烈地厮打着.

Sugar can decay the tooth.

糖会腐蚀牙齿.

My tooth is paining.

我牙痛.

Which tooth pains you?

你哪一颗牙齿痛?

I chipped the enamel on my front tooth when I fell over.

我跌倒时门牙的珐琅质碰碎了.