Diagrams and graphs are indispensable visual aids in many aspects of economics.图形和图解在经济学的许多方面是重要的形象工具.Therefore, it is frequently necessary to control certain aspects of the environment in such large enclosures.因此常常需要控制如...
苏格兰的地形the physical geography of Scotland他对地形作了缜密的研究.He had made a detailed study of the terrain.我们不熟悉新英格兰的地形.We're unfamiliar to the geography of New England....