Plain of厄斯垂伊伦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 weft knitted fabric纬平针织物plain square cut off ends端部切平齐plain irrigation distriet平原灌区plain iron-copper alloy纯铁铜合金plain and simple language浑朴的语言plain flat strip moulding压缝条Plain silk and good horse素丝良马Plain-capped Starthroatn.素顶星喉蜂鸟Plain river network areas平原河网区plain but wholesome meals清淡却有益于健康的饭菜