Vexillologists call these SOBs: seals on a bedsheet --  -- and if you can't tell what city they go to, yeah, that's exactly the problem, except for Anaheim, apparently.
旗帜学者称它们为SOB—— 被单上的印章 -- -- 如果你看不出这是哪座城市的旗帜， 没错，这就是问题所在， 当然，除了阿纳海姆。