I would have to give you a sense of being in a world of your own that children have.

我必须让你有一种置身于孩子们自己的世界的感觉。

They listened so intently that it was as if the two of you were in a world of your own.

他们听得那么专心，就好像你们两个沉浸在了自己的世界里一样。