periodically
adverb uk/ˌpɪə.riˈɒd.ɪ.kəl.i/ us/ˌpɪr.iˈɑː.dɪ.kəl.i/
周期性地
in a way that is repeated after a particular period of time
The equipment should be tested periodically. 设备应定期检测。
江苏热线英汉汉英双解词典包含207361条英汉翻译词条，涵盖了常用英语单词及词组短语的翻译及用法，是英语学习的必备工具。