Wisdom teeth have been around for millennia.

智齿已经存在了几。

Tooth decay can eventually destroy your wisdom tooth.

蛀牙最终会毁了你的智齿。

Hey, will I still get wise without my wisdom teeth?

没了智齿 我还有智慧吗？

Wisdom teeth are also called third molars.

智齿也被称第三磨牙。

Machinists crafted rare airplane parts, while a dentist readied to remove enlistees' wisdom teeth.

机械师们负责制作罕见的飞机部件，牙医则准备着帮士兵们拔掉智齿。

But why did wisdom teeth specifically get the boot?

但是什麽智齿会被开除呢？

Wisdom teeth that are not well aligned and become impacted are often removed.

当智齿长歪了，并发展阻生（智齿），通常会被拔除。

Some people naturally never have wisdom teeth.

有些人天生就没有智齿。

Sometimes, the wisdom teeth are impacted, meaning they are stuck under the gums.

有时，智齿会被阻挡，这意味着它们卡在牙龈下面。

The molars include four wisdom teeth, which are the last set of teeth to come in.

臼齿颗智齿，这是最后一组长出来的牙齿。

Wisdom teeth don't usually grow in until you're between 16 and 18 years old.

智齿通常不会生长，直到你16 到 18 岁。

People should have the placement of their wisdom teeth examined between the ages of 16 and 20.

人们应该在16岁到20岁之间检查智齿的生长位置。

According to the fossil record, ancient humans usually had straight teeth, complete with third molars — or wisdom teeth.

根据化石记录，古人的牙齿通常都排列得很整齐，且是有第三臼齿或智齿的完整组合。

This can lead to impacted wisdom teeth, which may cause discomfort and infections if not surgically removed.

这可能会造成阻生智齿，如果不靠手术拔除，可能会造成不适或感染。

So it was good to have extras. The removal of wisdom teeth is performed by oral surgeons.

所以更多的磨牙可能更有利一些。 拔出智齿由口腔外科医生进行。

And that's great, because no one needs to feel what's going on when their wisdom teeth are being removed.

这很好，因拔智齿的时候，就没人有疼痛的感觉了。

If you do not have room for your wisdom teeth, you'll likely have to have them removed.

如果你的智齿没有足够的空间，你很可能不得不拔掉它们。

And then wisdom teeth, which are usually the last to make their debut, seem to only complicate things further.

而通常最后才长出来的智齿似乎就会让情况变得更复杂。

Removal is also advised if there is a chance that poorly aligned wisdom teeth will damage other teeth.

智齿排列不整齐会损坏到其他的牙齿时，也建议将其拔出。

Have you had your wisdom teeth taken out?

你的智齿拔掉了吗？