I usually describe and summarize the theme to begin with which prevents me from going sideways and then use some long parallels and 3~4 examples to separately interprate the theme.

一上来我把主题描述概括一下，这样防跑题，然后用几个大排比，举三四几个例子，分别用来说明主题。

youdao

I usually describe and summarize the theme to begin with which prevents me from going sideways and then use some long parallels and 3~4 examples to separately interprate the theme.

一上来我把主题描述概括一下，这样防跑题，然后用几个大排比，举三四几个例子，分别用来说明主题。

youdao