fraternity
词根词缀：
词根
fratern= brother 兄弟
fraternal adj. 兄弟的；友善的
fratern 兄弟 + al …的，具有…性质的 → 兄弟的；友善的
fraternity n. 兄弟情谊
fratern 兄弟 + ity 具备某种性质，状况 → 兄弟情谊
数据来源：新东方英语词汇速记大全
相关例句：
He described sport as a symbol of peace and a means of promoting fraternity between nations.
他将体育运动描述为和平的象征，促进各民族间情谊的途径。
Liberty, equality, and fraternity.
自由、平等、博爱。
Liberty, equality, and fraternity, though never formulated, were cardinal principles of the gens.
自由、平等和博爱，虽然从来没有明确规定，却是氏族的根本原则。
A male person who is a fellow member ( of a fraternity or religion of other group).
是同道（一个兄弟会或其它宗教团体）成员的男性。
The atmosphere of the conference from beginning to end was one of solidarity and fraternity.
大会自始至终充满着团结友爱的气氛。
Look, I'm the fraternity president, not his mother.
听着，我是联谊会的主席，不是他妈妈。