1. The team is currently working on the federation of the new policies.(团队目前正在制定新政策的联盟。)
2. The two countries signed a federation to strengthen their economic cooperation.(两国签订了一项协定,以加强经济合作。)
3. The European Union is a federation consisting of multiple member states.(欧洲联盟是一个由多个成员国组成的联合体。)