The producers chose Pittsburgh because they wanted a sort of general, middleAmerican town.
制作商选择匹兹堡,是因为他们希望选取一个较为普通的,中等的美国城市。
2
You do not hear it much any more because people have grown used to the general American accent, thanks in part to Humphrey Bogart and the extremely MiddleAmerican John Wayne.