happening repeatedly or for a long time, or difficult to get rid of

It has been a deeply and persistently troubled region. 这一直是一个深陷困境的地区。

Schools with persistently low test scores would get extra funding. 考试分数持续偏低的学校将获得额外的资助。

If someone does something persistently, they do it in a determined but often unreasonable way

They have persistently ignored our advice. 他们一直无视我们的建议。

He persistently called at her home, sent letters, and made phone calls. 他不断地造访她家，给她寄信打电话。