你会需要这个 https://en.wikipedia.org/wiki/Arab%E2%80%93Khazar_wars#/media/File:Map_of_the_Caucasus,_740_CE.svg https://en.wikipedia.org/wiki/Arab%E2%80%93Byzantine_wars#/media/File:Arab-Byzantine_frontier_zone.svg https://en.wikipedia.org/wiki/Battle_of_Akroinon#/media/File:Asia_Minor_ca_740_AD.svg 或不