That “form” is called ATP, if you're familiar with that.

如果你熟悉这种形式的话，它的名字叫做 ATP（腺核苷三磷酸）。

Adenine will always bind with thymine and cytosine with guanine.

腺总是与胸腺嘧啶结合，胞嘧啶与鸟结合。

Purine-rich foods include shellfish, anchovies, red meat or organ meat.

富含的食物包括贝类、凤尾鱼、牛羊肉等红肉或内脏。

So the caffeine doesn't even need to compete with the adenosine to fit into those receptors.

所咖啡因不用和腺核苷竞争受体。

Now, from a chemical perspective, caffeine can be described as both a methylxanthine and an alkaloid.

从化学角度来看，咖啡因既可述为基黄，可述为生物碱。

Then it starts to make more, using a bunch of different chemical reactions.

然后身体利用很多不同的化学反应开始制造更多的腺核苷三磷酸。

When you exercise, your body uses up its main source of energy, ATP, within a few seconds.

当你锻炼的时候，你的身体在几秒钟内便耗尽了其能量的主要来源，即腺核苷三磷酸。

There are four bases: adenosine, thymine, cytosin, and guanine.

腺苷、胸腺嘧啶、胞嘧啶和鸟。

The Nitrogenous bases are of four different types: Adenine, Guanine, Cytosine and Thymine.

含氮碱基有四种不同的类型：腺、鸟、胞嘧啶和胸腺嘧啶。

There are also medications that help to decrease uric acid levels, which include xanthine oxidase inhibitors like allopurinol.

有一些药物可帮助降低尿酸含量，包括黄氧化酶抑制剂，如别醇。

In more severe cases though, drugs that suppress the immune system, like corticosteroids, azathioprine, or cyclosporine might be prescribed.

在某些更严重的病例中，可能会用到免疫抑制药物，如糖皮质激素、硫唑和环孢素。

But for the remaining .1%, one person might have an adenine where another person has a guanine.

但对于剩下的0.1%，一个人可能有腺而另一个人有鸟。

Finally, there are some rare stones made of xanthine, which, just like uric acid, is a byproduct of purine breakdown.

最后，还有由黄形成的罕见结石，同尿酸一样，是分解的副产物。

Some fish eyes use guanine—one of the chemical building blocks in DNA—and have white eyeshine.

一些鱼的眼睛使用鸟——DNA 中的一种化学成分——并且有白色的眼睛。

The mirror is made from crystals of guanine.

镜子由鸟晶体制成。

Purine position 1 to pyrimidine position 1, purine position 6 to pyrimidine position 6.

位置 1 到嘧啶位置 1，位置 6 到嘧啶位置 6。

The series of reactions that generate more ATP in muscles do produce extra protons, which lowers the pH in your muscles.

肌肉中形成更多腺核苷三磷酸的系列反应确实产生了额外的质子，这会降低肌肉中的酸碱值。

To understand where the uric acid comes from, let's start with purines, which, together with pyrimidines, are nature's most common nitrogen-containing heterocycles.

为了说明尿酸从何而来，让我们先来了解和嘧啶，它们都是自然界中最常见的含氮杂环。

Guanine crystals typically form into bulky prisms, but the crystals in the scallop's eye, form into perfect squares.

鸟晶体通常形成庞大的棱柱，但扇贝眼中的晶体形成完美的正方形。

DNA is made of four organic bases: adenine, guanine, cytosine, and thymine, or A, G, C, and T.

DNA 由四种有机碱基组成：腺、鸟、胞嘧啶和胸腺嘧啶，即 A、G、C 和 T。