The placement rules I mentioned at the beginning of the video.

我在视频开头提到的放置规则。

After the vocabulary section, I will be discussing some exceptions to the placement rules.

词汇部分之后，我要讨论一些放置规则的例外情况。

Right now let's discuss some exceptions to the placement rules I mentioned at the beginning of the video.

好的，现在我们来谈论我在视频开头提到的放置规则的例外情况吧。