The machines will be made of the best materials and the stipulations of the contract be strictly observed.
机器将用最好的材料生产,合同的规定也将得以严格履行。
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。