Level 5 · word 6,637 of 20,000

periodic

/ˌpɪriˈɑːdɪk/ American
  • adj. 周期性的, 定期的
Definition
  • adj. happening repeatedly at regular or irregular intervals
Example
The machine requires periodic maintenance to keep working properly.
这台机器需要定期维护才能保持正常运转。