Second, from time to time Congress will increase (or, less frequently, decrease) the number of federal judgeships in a particular judicial district, usually in response to shifting population numbers or a changing workload in that district.
第二，国会会时不时的在某个特定司法管辖区增加联邦法官数量（也可能是减少），通常是为了适应该地区的人口或工作量的变化。