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 cast-iron share普通铸铁犁铧
plain-milling machine平面铣床,普通铣床
plain carbon tool steel碳素工具钢
plain-barrel led roll平辊
Plain-colored Tanagern.纯色唐加拉雀
Plain and Cypher Switch明密开关
plain projection method压平法
Plain-bellied Emeraldn.纯腹蜂鸟
plain cement sand syrup素水泥砂浆
plain clothes detective便衣警探