You do the same. Well, I'd better go. Thanks again for everything.
你也代我问候一声。好,我得走了,再次谢谢你们的招待。
Historians have long been puzzled by dots, lines and symbols which have been engraved on walls, bones, and the ivory tusks of mammoths.
长期以来,历史学家一直对雕刻在墙壁上、骨头上、古代长毛象的象牙上的点、线和形形色色的符号感到困惑不解。