Plaine普莱纳plainadj.清楚的；简单的；坦白的；平常的；朴素的；纯的n.平原；广阔的区域adv.完全地；纯粹地plain finish平合模plain asphalt普通沥青plain cushion平垫plain fatigue常规疲劳plain thermitn.粗铝热剂plain habotai平织电力纺plain-sawedadj.平锯的；平锯木plain percale素色高级密织薄纱plain grinder普通磨床,外圆磨床plain-paperadj.只需普通纸的