fraternal cell

例句：

1. 1. The research team found that the fraternal cell structure was crucial to the success of their experiment.
   研究小组发现，兄弟会成员结构对于实验的成功至关重要。
2. 2.The fraternal cell network is essential for maintaining social cohesion and cooperation within a community.
   兄弟会成员网络对于维护社区内的社会关系和合作至关重要。
3. 3.The fraternal cell system has been studied extensively in the field of sociology and psychology.
   在社会学和心理学领域，兄弟会成员系统得到了广泛的研究。