subdivide
/ˌsʌbdɪˈvaɪd/verb
with obj.
- divide (something that has already been divided or that is a separate unit)再分, 把…分得更小：
the heading was subdivided into eight separate sections.
标题被细分作八个独立的节。
词源
late Middle English: from Latin subdividere （see SUB-, DIVIDE）.