assist,persist...请问-sist是词根吗?thx

assist,persist...请问-sist是词根吗?thx ASSIST 英语翻译Live tonic.helps maintain healthy digestive function.It also may be used to assist in the distribution and assimilation of in the digestive system.If digestive symptoms persist,seek medical advice.Vitamins can only be of assistance if the operator assist 请问SONY笔记本上的ASSIST键是什么意思?上次关机的时候突然按了他, Persist will create miracle! insist persist区别 persist in the oid persist英语怎么读 persist database怎么翻译? persist in my own 请问这个句子有语法错误吗,用need 还是 needed啊,If any assist that you needed assist什么意思 assist的名词 assist tourists是什么意思 assist的同义词 assist的所有形式 lane assist是什么意思