- 問題詳情:CheckoffthefourcornersArizona,Utah,ColoradoandNewMexicoarenotsimplytheonlyfourAmericanstatesthatmeetatasinglepoint,buttheyalsohosttheUS'sgreatestconcentrationofnationalparks.Thisistheplacetocomeforthatclassicsceneofthelonelydesertroadextendi...
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