Some problems concerning groups are best attacked by using graphs.有关群的一些问题可以使用图来很好地解答.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.We shall consider partitions of ...
有时表演会突然从高雅而变得低俗。At times the show veered from the sublime to the ridiculous.乔治想参与表演会的安排工作.George would like to have a hand in arranging the entertainment.戴安娜正在时装表演会上当模特.Diana is modeling for a fashion show....