We should require a survey report, so that we may know the extent of the damage.
我们将要求出具检验报告,以便我们能了解损坏的程度。
By correlating markings made in various parts of the world, historians have been able to read this difficult code.
历史学家通过把世界各地留下的这种痕迹放在一起研究,终于弄懂了这种费解的代码。