汉译英--下列表达如何翻译？

党外科级干部 = external sectional cader
处级干部 = department(al) cader
党内 =intra-party; internal party; within party

Surgical level party cadres
Level cadres
Party

Surgery level cadre of Party ----党外科级干部
Place level cadre --- 处级干部
Within the party ---党内