And then we have central incisors and laterals just on the outsides.

然后是中切牙和外侧侧切牙。

A mole rat's incisor teeth can move on their own, working together like chopsticks.

鼹鼠门牙可以自行移动，像筷子一样共同工作。

All eight of our incisor teeth are located in the front part of our mouth.

我们所有八颗门牙都位于口腔前部。

Canines are four teeth which sit next to the incisors.

尖牙是位于门牙旁边四颗牙。

Premolars are bigger than canines and incisors.

前磨牙比尖牙和门牙大。

Whenever we sink our teeth into something, such as an apple, we use our incisor teeth.

每当我们咬东西时，比如一个苹果，我们就用我们门牙。

With these razor-sharp incisors, a seal is able to scrape away fresh ice and keep the hole open.

有了这些锋利门牙，海豹就能刮掉新冰，保持洞口畅通。

The very first teeth we grow are incisors, appearing when we are around 6 months old.

我们长出第一颗牙是门牙，在我们六个月左右时出现。

Their teeth snip grass with front incisors and crush it with back molars, leaving a useful gap for a bit.

马用前面切牙咬断草，用后面磨牙将草嚼碎，之间缝隙就可以用来咬别东西。

Both canines and incisors, grow up to 50cm long in an adult male.

成年雄性和门牙均可长至 50 厘米长。

Incisors and cuspids are in front of the mouth; molars are in the back.

门牙和尖牙位于嘴前; 磨牙在后面。

And their teeth evolved into different shapes and unique combinations, like canines and incisors.

他们牙演变成不同形状 和独特组合，如和门牙。

Like all rodents, Castoroides had big incisors on its upper and lower jaws that never stopped growing.

像所有啮动物一样，Castoroides 上下颌都有大门牙，并且从未停止生长。

And Castoroides had incisors that were bigger and curvier than those of living beavers.

Castoroides 门牙比活海狸门牙更大、更弯曲。

The giant beaver's incisors could grow to be over 20 centimeters long!

巨型海狸门牙可以长到20多厘米！

Leonard, have you ever wondered why my little toes and lateral incisors are significantly smaller than the average for someone of my size?

兰纳德你想过为啥我小脚趾和侧门牙要比和我一号人小很多吗？

All so their modified incisors can be used as a raw material for art in Asia or the bows of string instruments in Europe.

这样一来，加工过象牙可被当做亚洲艺术原材料或欧洲弦乐器里饰片。

So Malek wore fake teeth to account for Mercury's additional four incisors.

因此，Malek 戴上了假牙来解决 Mercury 额外四颗门牙问题。

The paper reports that “the common finding was a narrowing of the mandibular dental arch and a decrease in maxillary arch length, causing an incisor cross-bite.”

“最普遍情况是下颌牙弓变窄，上颌弓内缩，从而导致门牙反咬合。”

Then it chews a hole into the bark with its rodent-like incisors, sticks that skinny finger into the hole and pull out grubs.

然后它用啮动物般门牙在树皮上咬出一个洞，将那根瘦骨嶙峋手指伸进洞里，然后拉出幼虫。