sporadically
adv. 零星地；偶发地
例句
The distant thunder from the coast continued sporadically.
远处海岸仍然零星地传来雷声。
《柯林斯英汉双解大词典》
She attended lectures only sporadically.
她只是偶尔听听课。
《牛津词典》
Fighting continued sporadically for two months.
战斗断断续续地进行了两个月。
