You must know Beijing well. 你一定非常熟悉北京。

A: How many times have you been to Beijing?

A: 你來北京多少次了？

B: Lots of times. Sometimes for business, sometimes for holiday.

B: 很多次了。有時來出差，有時來度假。

A: You must know Beijing well now.

A: 你現在對北京一定非常了解了。

B: Well, I get to know it better every time I visit.

B: 哦，我一次比一次更了解北京。

A: That's good. I think it's better when you know a city well.

A: 好。我想當你了解一個城市的時候感覺更好。

B: Yes. You enjoy it more. It's more interesting.

B: 是的。你會更喜歡它。它會更有趣。