I've just realized. So I'll do it like that.

我刚刚意识到，所以我将往下标一下。

This little subscript two tells us there's two of the hydrogen atoms in this molecule.

这小下标2告诉我们这分子中有两氢原子。

Linguists will sometimes denote referents in text by using subscript numbers or letters.

语言学家有时使用下标数字或字母来表示文本中的指代对象。

Now, there are three basic ways  you will see variables identified as vectors; an arrow over a variable, a subscript on the  variable, or the variable in boldface.

现在, 有三种基本方式, 到变量被识别为向量;一箭头在变量上, 一下标在变量上, 或者变量用黑体表示。

So that just becomes the sum from i is equal to 1 to n x sub i squared divided by big N. Now this is interesting.

所以这就变成了从i等于1到n的x下标i的平方之和除以大N。现在这很有趣。

There are not exponents, they're just a way of indexing what we're talking about, since I want to save subscripts for different indices later on.

这里没有指数， 它们只是用来标记我们讨论的内容，因为我希望稍后为不同的索引保留下标。

The 2 here, the subscript means that's the number of atoms of hydrogen that we have in one hydrogen molecule.

这里的下标 2 表示一氢分子中氢原子的数量。

We can write this out as an equation for each coil separately, using a subscript P for the primary coil and a subscript S for the secondary coil.

我们可以将其分别写为每线圈的方程式，使用下标 P 代表初级线圈，下标 S 代表次级线圈。

Later, for no special reason, the fashion became to render the number as subscript H2O.

后来, 由于没有特殊原因, 时尚变成了将数字表示为下标H2O。

Now we're going to--notice there's no subscript on this P and you'll see why in a second.

现在我们要——注意这 P 上没有下标，马上就明白为什么。

And then you have another one, minus mu x sub i.

然后又有另一，减去μ乘以x下标i。

And the oxygen, since there's only 1, we don't write 1 subscript underneath that.

而氧气, 因为只有 1, 所以我们不在下面写 1 下标。

Similarly, let's let P sub Y be the function for our second distribution and P sub X plus Y be the  function describing the distribution for the sum.

类似地，让我们令P亚Y为第二分布的函数，P亚X加Y为描述总和分布的函数。 注：原文中的“P sub Y”和“P sub X plus Y”是数学表达式的口语化表述，直译为“P亚Y”和“P亚X加Y”，这里的“亚”是对下标的一种口语化表达方式，在正式文本中应写作下标形式。

And position final, or x, minus position initial, or x with a subscript of zero, equals  change in position or displacement.

最终位置或 x 减去初始位置或下标为零的 x 等于位置或位移的变化。

Similarly, statistical significance can be neatly indicated using subscripts and footnotes, as I did in the original table.

同样，可以使用下标和脚注整齐地表示显着性，就像我在原始表格中所做的那样。

The sum from i is equal to 1 to n of the first term, x sub i squared minus-- and actually, we can bring out the constant terms. When you're summing, the only thing that matters is the thing that has the i-th term.

从i等于1到n的求和，第一项是x下标i的平方减去——实际上， 我们可以提出常数项。 在求和时，唯一重要的是含有第i项的那部分。

So, moving forward, I'm just going to write this  expansion more abstractly – just a sum from n equals 0 up to capital n, where c sub n tells  us the coefficients that we don't know.

所以， 接下来， 我将更抽象地写出这展开式——从n等于0到大写的N的求和，其中c下标n告诉我们那些我们不知道的系数。

And so in any equation like this the little subscripts are going to stand for the number of atoms.

因此, 在任何像这样的方程中, 小下标将代表原子的数量。

Well, no, we don't know what the x sub i's are.

好吧，我们不知道x下标i是什么。

Oh, yeah, that means velocity with a  subscript of x means velocity final in the x-direction.

哦，是的，这意味着速度下标为 x 表示 x 方向的最终速度。