然而你不可以拥有一部分背对着你的听众，因为这样你永远也不知道他们将要做什么。

You ought never to have any part of the audience behind you. You can never tell what they are going to do.

youdao

然而你不可以拥有一部分背对着你的听众，因为这样你永远也不知道他们将要做什么。

You ought never to have any part of the audience behind you. You can never tell what they are going to do.

youdao