n. the interval taken to complete one cycle of a regularly repeating phenomenon
n. (ice hockey) one of three divisions into which play is divided in hockey games
n. a unit of geological time during which a system of rocks formed
n. the end or completion of something
n. 时期, 节段, 节, 句点, 学时, 周期
a. 当时特有的, 过去某段时期的
interj. 就是这话, 就是这么回事
1. The school day is divided into several periods.
学校的一天分为几个节段。
2. She has her period every month.
她每个月都会来月经。
3. There was a long period of silence after the announcement.
公告后有一段长时间的沉默。