If an unpleasant feeling or situation persists, it continues to exist.

If the pain persists, consult a doctor. 如果疼痛持续就去看医生。

The cold weather is set to persist throughout the week. 寒冷天气很可能将持续整个星期。

to try to do or continue doing something in a determined but often unreasonable way

If he persists in asking awkward questions, then send him to the boss. 如果他没完没了地问令人尴尬的问题，就把他打发到老板那里去。

The government is persisting with its ambitious public works programme. 政府在坚持实施其雄心勃勃的市政工程规划。