Something that is persistent continues to exist or happen for a long time; used especially about bad or undesirable states or situations.
近义词
continuous , constant , relentless , perpetual , incessant
双语例句
例： Her position as national leader has been weakened by persistent fears of another coup attempt.
由于人们一直担心再次政变，她的国家领导人地位被削弱了。
例： His cough grew more persistent until it never stopped.
他的咳嗽时间愈来愈长，直到咳个不停。
例： The public has to be reassured that children are safe from persistent predatory offenders.
需要让公众放心的是，孩子们不会被抢劫惯犯伤害。