In7th century bc , romans inherited the traditions of greece and built racetracks and unroofed amphitheaters .

公元前七世纪时罗马人继承希腊传统，就修建了赛马场和露天竞技场。

Annie : in the 7th century bc , romans inherited the traditions of greece and built racetracks and unroofed amphitheaters .

安妮：公元前七世纪时罗马人继承希腊传统，就修建了赛马场和露天竞技场。