fraternal
词根词缀：
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：
Our two peoples are bound together by ties of fraternal friendship.
两国人民情同手足。
An officer in some knightly or fraternal orders.
爵士在某些骑士或兄弟会中的官员。
We must always be ready to learn from the people of fraternal countries and maintain a genuine internationalist spirit.
对兄弟国家人民要永远保持学习的态度，要有真正的国际主义精神。
In addition to the Soviet Union, the fraternal countries in East Europe have also given us some assistance.
除了苏联以外，东欧一些兄弟国家也给了我们一些帮助。
With the neighboring nations upon our continent we should cultivate kindly and fraternal relations.
我们要与这块大陆的邻国培养友好的兄弟关系。
Here, like fraternal mutual aid.
在这里，像兄弟般互助。