periodically
词形变化：
同义词：
intermittent | serial | occasional | episodic | intervallic | interrupted | sporadic | broken | cyclic | recurrent | regular | continuing | seasonal | periodical |
反义词：
词义辨析：
同义参见:
sometimes
periodically
词形变化：
同义词：
intermittent | serial | occasional | episodic | intervallic | interrupted | sporadic | broken | cyclic | recurrent | regular | continuing | seasonal | periodical |
反义词：
词义辨析：
同义参见:
sometimes