1.  at regular intervals
2.  at fixed period
3.  regular intervals
4.  terminal

• 1. 定期: Regular | at fixed period | periodically
• 2. 定期存款: Time deposit | fixed deposit | fixed term deposit | fixture
• 3. 定期检查: regular inspection | regular inspection

更多释义

• 1.定期检查机油，经常保养汽车。
  Check the oil at regular intervals, and have the car serviced regularly.
  dict.yoduao.com
• 2.我们的记录定期更新。
  Our records are regularly updated.
  dict.yoduao.com
• 3.邮寄名单定期更新。
  Mailing lists are updated periodically.
  dict.yoduao.com

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