Noun:

1. the ordinary members of an organization (such as the enlisted soldiers of an army);

   "the strike was supported by the union rank and file"
   "he rose from the ranks to become a colonel"
   

2. people who constitute the main body of any group

rankn.等级；阶层；排；列v.排列；分等级；列为；排名，排位adj.繁茂的；讨厌的

1. They were demoted to the rank of ordinary soldiers.
   他们被降为普通士兵。
2. He who joyfully marches to music in rank and file has already earned my contempt.
   他快乐在普通士兵前进到音乐已经赢得了我的蔑视。
3. We can't create a society that wants all chiefs and no Indians.
   我们无法缔造一个只要领导人而不要普通成员的社团。
4. He also takes the role of loyal party unifier, building good will amongparty leaders and the rank and file.
   他也会担当忠诚的共和党联合者，在共和党的领导者与普通成员间建立良好的愿景。