door(门, 通道, 家, 户)—outdoor(室外的, 户外的, 野外的) over:too much.above. additional head(头,头的, 主要的)—overhead(在头上的,在头顶上, 在空中, 在高处) time(时间, 时侯, 时机, )—overtime(超时, 加班, 延长时间,超时的, 加班的,加班地,使超时) poly:many centric(中心的, 中央的)—polycentric(多中心的) syllabic([语] 音节主音,音节的)—polysyllabic(多音节的) post:later than.after graduate((大学)毕业生, 研究生,(使)(大学)毕业)—postgraduate(研究所学生, 研究生,毕业后的) war(战争,作战, 打仗)—postwar(战后的) pre:before.in advance pay(薪水, 工资,支付)—prepay(预付) war(战争,作战, 打仗)—prewar(战前的,在战前) pro:in favor of, supporting America(<美>美国, 美洲(包括北美和南美洲))—proAmerica abortion—proabortion(流产, 堕胎, 失败, 夭折, 中止, 早产) pseudo:not real.false name( 姓名)—pseudonym(假名, 笔名) science(科学, 自然科学)—pseudoscience(假科学, 伪科学) re:again.back to the former state unite(联合, 团结)—reunite((使)再结合) use(使用)—reuse(再使用,重新使用) self:by means of oneself or itself.of, to, with, for, or in oneself or itself employed(雇用, 用, 使用)—selfemployed taught(teach的过去式和过去分词)—selftaught semi:half.partly circle(圆周, 圆形物)—semicircle(半圆形) final( 决赛)—semifinal(半决赛) step:not by birth but through a parent who has remarried mother(母亲, 妈妈)—stepmother(继母) children(孩子, 孩子们)—stepchildren(继子,继女) sub:under,below.less imortant.part of the stated bigger whole divide(分, 划分, 分开, 隔开)—subdivide(再分, 细分) section(部分)—subsection(分部, 分段) super:more, larger, greater than usual market(市场)—supermarket(超级市场) natural(自然的, 自然界的, 普通的, 正常的)—supernatural(超自然的, 神奇的,超自然物, 不可思议的事) tele:at or over a long distance.by or for television communication—telecommunication screen(屏, 银幕)—telescreen(电视屏幕,荧光屏) therm(o):concerning heat chemistry(化学)—thermochemistry(热化学) meter( 计, 表)—thermometer(温度计, 体温计) trans:across, on or to the other side of. between Atlantic(大西洋)—transatlantic(大西洋彼岸的) plant(种植, 栽培, 培养)—transplant(移植, 移种)