来自拉丁语fides, 信任，信仰，词源同faith, confidence. 引申词义联合，结盟。

1. The Russian Federation declared itself to be a sovereign republic.

俄罗斯联邦宣布自己为主权独立的共和国。

2. He hopes for a gradual disconnection from the federation.

他希望能从联盟中逐渐抽身而出。

3. The German sports federation said it would hold an investigation.

德国体育联合会称它将进行调查。

4. The World Chess Federation has affiliates in around 120 countries.

国际象棋联合会在大约120个国家设有分支机构。

5. The officer cited the federation's rule on affiliation.

该官员引用了联邦政府对于隶属关系的规定。