Stone Representation Theorem is just as important to Boolean Algebra as Cayley theorem is to abstract group theory. Stone Representation Theorem之于 Boolean Algebra就象 Cayley Theorem之于 Abstract GroupTheory一样重要 .
Now, many people find it cold comfort to join such an abstract group, especially when they have not yet met any noble ones in person. 诚然，不少人觉得加入这么一个抽象的团体，得到的慰勉温暖不足，特别是当他们还没有亲自遇到一位圣者时。
Education should not be restricted to any one specific age group. 教育不应限制在任何特定的年龄组上。
He broke away from that lawless group years ago. 他在几年前脱离了那个非法团体。
The group of barbaric soldiers killed many people. 那群野蛮的士兵杀了很多人。