plainern.抱怨者=complainer.
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 silkworm素蚕
plain beer mug平光啤酒杯
plain telegram明语电报,明电
plain speakingvi.讲话直率的
plain drifting转动漂动
plain triangle三角定规
plain milk cup素色奶杯
Plain Titmousen.纯色山雀
Plain and easy平易浅切
plain wanderer领鹑