1、About 3, 500 trademark suits are filed each year in federal district courts.
每年在聯(lián)邦區(qū)法院大約有3,500個(gè)商標(biāo)侵權(quán)案。

2、Each state has at least one federal district court.
每個(gè)州至少有一所聯(lián)邦地方法院。

3、When I served as a Federal District Court judge, I performed the naturalization ceremony regularly.
在聯(lián)邦地區(qū)法院任法官時(shí)，我經(jīng)常主持歸化儀式。