So far, as many years have been devoted to excavating and analyzing itscontents. Uncovering the rest of this sprawling, 22-square-mile(57-square-kilometer) complex will take decades more.

相关的出土和研究工作也开展了许多年，但是要完全揭开这个占地22平方英里的墓群的秘密还要花上几十年。