Yes, our market analysis tells us our prime user will be between 40 and 60.
好的,我们的市场分析告诉我们,我们产品主要的使用者年龄将在40至60岁。
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。