n.火车；行列；一系列相关的事情；拖裾v.训练；教育；培养；修整 变形： 复数：trains过去式：trained过去分词：trained现在分词：training第三人称单数：trains 双语释义：n.(名词)[C]列车,火车 railway engine with several carriages or trucks linked to and pulled by it[S]一系列相关的事情、想法等 sequence of connected events, thoughts, etc.v.(动词