求翻译：两人一组是为了每个学生都有足够的机会去说，而数字的表达法是本单元的知识要点，我可以提示学生讨论一些世界之最，如珠穆朗玛峰的高度、亚马逊河的长度、马里亚纳海沟的深度、南极冰川的后度、中国人口的总数、伊拉克战争的时间等等，这些既丰富了学生的知识，又达到了对数字表达法的巩固。是什么意思？

Two people a group is to each students are has enough of opportunities to said, and digital of expression method is this unit of knowledge points, I can prompted students discussion some world most, as Everest of height, and Amazon of length, and Mariana Trench of depth, and Antarctic glacier of Hou of, and China population of total, and Iraq war of time and so on, these both rich has students of knowledge, and reached has on digital expression method of consolidate.