1.  period
2.  cycle

• 1. 周期: Cycle | Period | Cyclicality | Tras
• 2. 经济周期: commercial circle; commercial cycle; economic circle; business cycle | the economic cycle | business cycle | economic cycle
• 3. 生命周期: Life cycle | Product Life Cycle | SDLC | Activity

更多释义

• 1.妇女的平均月经周期是28天。
  The average length of a woman's menstrual cycle is 28 days.
  dict.yoduao.com
• 2.并非所有的医生都完全地了解生育周期。
  Not all doctors truly understand the reproductive cycle.
  dict.yoduao.com
• 3.进行周期性检查以确保高标准得以维持。
  Periodic checks are taken to ensure that high standards are maintained.
  dict.yoduao.com

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