Two. The game allows unlimited substitutions from the bench during stoppages and play.

二，比赛进行和暂停时，可以进行不限次数的换人。

So, two common substitutions made by non-native speakers.

所以，这是非母语人士常用的两个换。

Such small substitutions have minimal effect on the overall melody.

这种小换对整体旋律的影响极小。

You can have the substitutions are one-note changes to another note.

你可以让单一音符变成一个，形成代。

He's no expert. - Right. It's a simple substitution code...

他不是密码专家 没错 这就像小时候上童军课。

And also, another reason why it's so difficult is because there are many substitutions to both of these sounds.

而且，一个困难的原因是这两个音都有很多代音。

During the third phase, substitution, the technology faces the highest barriers to adoption.

在第三阶，代阶，该技术面临着最高的采用障碍。

Ooh, it might be a substitution cipher. We could start with basic cryptanalysis.

甚至有可能是换式密码。我们可以从基本密码分析着手。

Ivankovic's indecisiveness, particularly when it comes to substitutions, has become a glaring issue.

伊万科维奇的优柔寡断，尤其是在换人方面，已经成为一个突出的问题。

We can make this equation much easier to work with by using " u" substitution.

我们可以用换元法使这个方程更容易处理。

I'm also going to talk about the common substitutions that non-native speakers make.

我还将讨论非母语人士常用的换词。

" CPI doesn't allow for immediate substitution, which exacerbates the divergence, " says Julie Smith of Lafayette College.

“CPI不会将时的置换计算在内，这就会导致差距扩大，”拉斐特学院的朱莉·史密斯说。

So this is the substitution that they would use.

所以这就是他们会使用的代品。

Had it indeed been prayer that had produced the substitution?

真的是祈祷产生了代吗？

Try to avoid these substitutions and get comfortable with the TH sound.

尽量避免这些换并适应 TH 声音。

But having a cardboard cutout is no substitution for having a real six pack.

但是，纸板剪纸并不能代真正的六块腹肌。

And to do that I'll make a simplifying substitution.

为此，我将进行简化换。

And x is, by this substitution, n times a.

通过这种换，x 是 n 乘以 a。

Another nifty and lesser known tool is called process substitution, which is kind of similar.

一个漂亮但鲜为人知的工具称为进程换，它有点相似。

They're considered substitution therapy -- basically fighting fire with fire.

它们被认为是代疗法——基本上是以毒攻毒。