sporadic
US
UK sporadic adj: (irregular)
SC 间或出现的 jiàn huò chū xiàn de
SC 断断续续的 jiàn huò chū xiàn de，duàn duàn xù xù de
The company produces a sporadic newsletter.
sporadic adj: (scattered)
SC 分散的 fēn sàn de
SC 零星的 fēn sàn de ，líng xīng de
The results of the survey were sporadic; there was no clear pattern.