在本文中，我们将利用前面共同描述的许多SIBus功能，所以在深入研究细节之前，我们首先对其进行简要回顾。

In this article, we will take advantage of many of the SIBus features that we previously described in concert, so let's start by revisiting them briefly before digging into the details.

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It's a common mistake to make if you forget that I've actually declared that variable up top, but wait a minute, I know any time that I use a variable, I have to declare it.

这是一个通常犯的错误，如果你忘了,之前在前面已经声明了这个变量，等等，我知道在任何时候,我使用一个变量，我必须声明它。

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