periods 

  1. 名詞
period複數: 時期, 期間
週期
句號
生理期, 月經
時代
...(幾)堂課, ...(幾)節課
複合句, 完整句
循環節
樂段

    同義字詞
menstruation
age,day,epoch,era,time

例句

  1. I've had periods of self-imposed abstinence.
  2. Grace periods for late patent annuity payments.
  3. At short periods (P~3d) we have the hot Jupiters.
  4. Cookies are stored for different periods of time.
  5. Buck identifies four periods of policy development.