前缀:pre-
1、前
prewar 战前的
preposition 前置词,介词
pre-liberation 解放前的
prefix 前缀
preschool 学龄前的
predawn 黎明前的
prehistory 史前期
preteen 十三岁以前的孩子
precondition 前提
prehuman 人类以前的
preconference 会议前的
predeparture 出发前的
2、预先
prepay 预付
prebuilt 预建的,预制的
prejudge 预先判断
premade 预先做的
preheat 预热(炉灶等)
prechoose 预先选择
precool 预先冷却
predetermine 预定,先定
preocook 预煮
词根词缀:aurora-, -aurora
【来源及含义】Latin: dawn
【同源单词】Aurora Australis or aurora australis, Aurora Borealis, aurora gating, aurora polaris, Aurora, auroral
词根词缀:crepuscu-, crepusc-
【来源及含义】Latin: twilight, dusky, dawn; in the evening or early-morning hours; dim, indistinct
【同源单词】anticrepuscular arch, anticrepuscular ray, crepuscle, crepuscular, crepuscule, crepusculine
词根词缀:eo-, eoso-, eos-
【来源及含义】Greek: dawn [east], daybreak; early; primarily used to indicate "early, primeval"
【同源单词】eoan, Eoanthropus, eobiogenesis, eobionts, Eobrontosaurus, Eocene
词根词缀:eosin-, eosino-
【来源及含义】Greek: daybreak, dawn, red of the dawn sky; primarily used in naming chemical compounds, especially pertaining to red stain or dye
【同源单词】eosin, eosinopenia, eosinotactic