Two organs, otherwise used for eating and speaking, are rubbed and pressed against one another with increasing force.

人們拿來吃東西和講話的器官，以不斷增強的力道彼此磨擦、施壓。

Accompanied by the secretion of saliva.

伴隨著唾液的分泌。

A tongue normally precisely manipulated to articulate vowel sounds.

而舌頭，一般用來精確操控母音發聲。

Or to push mash potato or broccoli to the rear of the palate.

或把馬鈴薯泥、花椰菜推到後顎。

Now moves forward to meet its counterpart, whose tip might touch in repeated staccato movements.

現在卻用來與對方的舌頭相接，而對方也不斷反覆地以舌尖碰觸自己的舌頭。

One would have to carefully explain to an alien visitor from Keppler 9B what's going on.

當遇上來自克卜勒 9B 的訪客，這可得費一番唇舌才有辦法向他們說明這到底是怎麼一回事。

They're not about to bite chunks out of each other cheeks or attempting to inflate one another.

他們不是要咬對方的腮幫子，也不是企圖幫對方充氣。

Why is kissing so significant and potentially so exciting?

為什麼親吻如此意義深遠，又潛藏刺激？

Sexual excitement is psychological.

興奮感源於心理。

It's not so much what our bodies happen to be doing, that's getting us turned on.

我們身體正做著什麼與燃起性慾並沒有那麼相關。

It's what happening in our imaginations that matters.

這和我們的想像有關。

Partly, the excitement of kissing is the result of social codes being breached.

某種程度上，親吻帶來的刺激感來自違反社會規範。

We could imagine a society where it was very forbidden, and yet very special for two people to rub the gap between index finger and thumb together.

想像一個社會，兩個人彼此磨擦大拇指和食指之間的虎口是很禁忌、卻又非常特別的經驗。

The first time you did it, would be something you'd remember all your life.

你的初體驗，將成為畢生難忘的經驗。

The huge meaning of kissing is something we've built up by social agreement.

親吻的重大意義是透過社會共識建立起來的。

And its fundamental definition is: I accept you, enough to do something potentially quite revolting with you.

而其基本定義就是：我接受你，足以和你做一些原本可能相當令人反感的事。

The inside of a mouth is deeply private, ordinarily it would be utterly nauseating to have a stranger poke their tongue into your face.

嘴巴是相常隱私的部位。一般來說，陌生人把舌頭伸進你的嘴巴是件相當令人厭惡的事。

To allow someone to do these things, signals of a fundamental level of acceptance.

允許某個人這樣做，意謂著基本程度上的接受。

All of us suffer from strong feelings of shame.

每個人都有強烈的羞恥心。

Which another's kiss starts to work on overcoming.

而另一個人的吻可以讓我們開始克服這一切。

Aside from our public identities, we all have lonelier, private selves.

除了公眾身分以外，我們都還有另一個較寂寞、隱密的自我。

Which is what we feel we getting and giving access to...through a kiss.

透過吻，我們允許對方接近我們的自我、走進我們的心房。

Our mouths become privileged arenas in which to surrender our defenses.

嘴巴成了特許的領域，使我們卸下防衛。

And gift ourselves to another, physical pleasure aside.

除了肉體上的愉悅，並將自己交付給另一個人。

That's why it's so very exciting.

這就是親吻如此令人興奮的原因。