Laurance-Where on earth are we?

　　Soony- Judging by all the traffic, I'd say we're near the heart of the downtown area.

　　Laurance-What did I do wrong? Did I take a wrong turn?

　　Soony- I'm not sure, but I think that you turned left when you should have turned right.

　　Laurance-Well, now the,problem is how to get back onto the main highway.

　　Soony- Well, if I may offer a suggestion ... Why don't you stop and ask a policeman?

　　Laurance-Yeah, yeah, yeah, I think I see one up there in the next block.

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　　注解:

　　on earth:(口語中用于疑問句加強語氣)究竟,到底,全然.

　　heart of the downtown area:heart=center;downtown area指繁華的商業(yè)區(qū).

　　If I may offer a suggestion:直譯為"如果我可以提個建議的話".