You'll be one-and-twenty before you know where you are, and then perhaps you'll get some further enlightenment.

在你知道自己在哪里之前，你将是一岁和二十岁，然后也许你会得到一些进一步的启发。

Before you know where you are, you've opened a free bar for all the undesirables of the college.

在你知道自己在哪里之前，你已经为学院里所有不受欢迎的人开了一家免费酒吧。