例句
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。
常用搭配
- periodic checks｜定期检查
- periodic review｜定期审查
- periodic table｜元素周期表
词形与相关词
period (n.) · periodically (adv.) · periodicity (n.)
用法提示
periodic是形容词，不是名词；副词为periodically。