Wisdom teeth have been around for millennia.

智齿已经存在了几千年。

But wisdom teeth aren't just painful.

不过，智齿不止会疼痛。

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.

智齿也被称为第三磨牙。

But why did wisdom teeth specifically get the boot?

但是为什麽智齿会被开除呢？

Much later in our lives, we get our final teeth, the third molars, aka wisdom teeth.

在我们生命的后期，我们会长出最后的牙齿——第三磨牙，也就是智齿。

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。

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

当智齿长歪了，并发展为阻生（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。

It's very common for wisdom teeth to simply not develop.

不长智齿是很常见的现象。

In English, we call them " wisdom teeth" because they show up around the age of adulthood.

英语中我们称它们为" 智齿" ，是因为它们通常在成人期才长出。

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。

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.

臼齿包括四颗智齿，这是最后一组长出来的牙齿。

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。

So I say again: wisdom teeth are weird.

智齿很奇怪。

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。

Around one in five people are completely missing one or more of their wisdom teeth.

约五分之一的人先天缺失一颗或多颗智齿。