•a persistent smell/skin rash持续不散的气味／顽固的皮肤疹

•Symptoms of the illness include a high temperature and a persistent dry cough.此疾病症状包括高烧和持久干咳。

•There have been persistent rumours that the managing director might take early retirement.不断有谣言说总经理可能会提早退休。

•Be persistent - don't give up.要坚持不懈——别放弃。

•He has been a persistent critic of the president.他一直对总统持批评态度。

•She is a persistent offender and has been arrested five times this year for shoplifting.她是个惯犯，今年已五次因在商店行窃被捕。