the act of dividing a period of time into shorter periods, or one of these divisions

The technical term for this is the "periodization" of the year, each phase lasting around six weeks. 这方面的技术术语是一年的“分期”，每个阶段持续大约六周。

The book cuts across conventional academic periodizations and traces the interaction of politics and the legal profession from the seventeenth century to the present. 这本书跨越了传统的学术分期，追溯了从 17 世纪到现在的政治与法律专业的互动。