Different cultures have different opinions about belly buttons.

不同的文化对肚脐有不同的看法。

But in southern India many women proudly show their belly buttons.

但在印度南部，许多女性会自豪地露出肚脐。

So no two people's belly buttons are exactly the same.

所以没有两个人的肚脐是完全一样的。

When the weather's nice, they like to nap in mortals' belly buttons.

天气晴朗时，它喜欢在凡人的肚脐眼中酣睡。

The same can't be said for all the world's outie belly buttons.

当然，这不适用于世界上所有外凸型河道。

Belly button fluff is especially common in innie belly buttons.

肚脐绒毛在凹脐中尤其常见。

But in general, belly buttons have two basic different shapes: 'innies' and 'outies.'

但一般来说，肚脐有两种基本不同的形状：凹脐和凸脐。

We can tattoo eyebrows, belly buttons, toenails.

我们可以纹眉毛、肚脐、脚趾甲。

In one study, 60 volunteers swabbed their belly buttons.

在一项研究中，60 名志愿者擦拭了肚脐。

There are a lot of belly buttons on display.

有很多人露出肚脐。

" But why do we all have belly buttons? " he asks.

“但为什么我们都有肚脐呢？ ” 他问。

We have a bottle of tequila and shockingly deep belly buttons.

我们有一瓶龙舌兰酒 还有深到让你震惊的肚脐。

And I made the little empty spots in all the letters look like belly buttons.

我让所有字母中的小空点看起来像肚脐。

We can tattoo eyebrows, belly buttons, toenails. We can improve the appearance of a cleft lip.

我们可以纹眉毛、肚脐、脚趾甲。我们可以改善唇裂的外观。

It shows up in noses, throats, hair, and, yes, even belly buttons.

它出现在鼻子、喉咙、头发，甚至肚脐上。

He was fascinated by the question: Why do some belly buttons collect more lint than others?

他对这个问题很着迷：为什么有些肚脐比其他肚脐收集更多的棉绒？

Now, many of those microbes aren't unique to belly buttons, like staphylococcus, which can lead to staph infections.

现在， 许多微生物并不只存在于肚脐中，比如可能导致葡萄球菌感染的葡萄球菌。

Rivers also have innies and outies, not belly buttons, but mouths: where rivers flow into the sea, the land either pokes out or bends inward.

河流同样也有凹凸之分，不过不是肚脐，而是河口：在河流入海的地方陆地会向外延伸，或者向内弯曲。