periodic
英 /ˌpɪəriˈɒdɪk/ 美 /ˌpɪriˈɑːdɪk/
- adj. 周期性的；定期的happening repeatedly, often at regular intervals
The old boiler needs periodic checks to keep working safely.
这台旧锅炉需要定期检查，才能继续安全运行。
Periodic assessments allow teachers to identify learning difficulties before students fall significantly behind their classmates.
定期评估能让教师在学生明显落后于同学之前发现其学习困难。
搭配
periodic checks 定期检查periodic review 定期审查periodic table 元素周期表
辨析提示
periodic是形容词，不是名词；副词为periodically。
词族
period (n.)、periodically (adv.)、periodicity (n.)
近义 recurring
相关词
插画、释义与录音：Word Atlas contributors（词光），CC BY 4.0，已修改。署名与许可