| 词汇 | periodically | 
| 释义 | 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。  | 
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