After ruling out possible other uses for the wall—like defense against enemies, or corralling animals—the scientists determined that the formation was actually an ancient seawall, the oldest known example in the world.
排除这座墙
其他可能用途之后——比如防范敌人或围捕动物——科学家们判定该结构是古代防波堤,是全世界已知最古老
范例。