outdated a. no longer in general use; old-fashioned 过时的
quicken v. make or become quick(er)
acceleration n. 加速
dramatize vt. put into dramatic from; express or represent (sth.) in a dramatic or exaggerated way
account n. report or description
transportation n. the business of carrying people or goods from one place to another 运输
transport vt.
BC abbr. Before ( the birth of) Christ 公元前
available a. capable of being got, obtained, used, etc. 可获得的;可利用的
camel n. 骆驼
caravan n. (往返于沙漠地带的)商队
average vt. have as an average 平均为
per prep. for each 每
mph abbr. miles per hour
chariot n. two-wheeled carriage pulled by horses (古时)双轮马拉战车
maximum n. & a. (being) the largest number, amount, etc.
roughly ad. about; more or less but not exactly
impressive a. making a deep impression on the mind and feelings 给人深刻的印象的
exceed vt. go or be beyond a limit, measure, or degree 超过
coach n. large, old-fashioned, closed carriage pulled by horses 四轮大马车
operate v. (cause to ) work, be in action
mere a. nothing more than
locomotive a. railway engine 火车头
race n. main division of any living things; nation or tribe 属;人种
airplane n. 飞机
flick n. sudden, light blow or stroke; sudden short movement 轻弹;突然的轻快动作
rocket n. 火箭
capsule n. the part of a spaceship in which the pilots live and work and from which the engine is separate when the takeoff is completed 宇宙密封舱
altitude n. 高,(尤指海拔)高度
mineral n. 矿物,矿石
accelerative a. 加速的
trend n. general direction; tendency 趋向;倾向
pattern n. the way in which sth. happens or develops 模式
statistical a. 统计的;统计学的
unmistakable a. clearly recognizable
innovation n. the introduction of sth. new; new idea, method, or invention 革新;新方法
stage n. point, period or step in development 阶段;时期
cycle n. series of events taking place in a regularly repeated order 循环;周期
feasible a. capable or being carried out or done; possible 可行的
diffusion n. the act of spreading out (knowledge, etc.) widely 扩散;传播
embody vt. give form to express 体现
generate vt. cause to exist or occur; produce 发生;产生
shorten v. make or become shorter
scientific a. of science; guided by the rules of science
radically ad. fundamentally; essentially; extremely
striking a. very noticeable; attracting attention 显著的
ancestor n. 祖先
marketplace n. square or open place in a town where a market is held
refrigerator n. 冰箱
frige n. refrigerator
peak n. the highest point or level; the pointed top fo a mountain or hill 顶峰;山峰
novelty n. sth. new and unusual; innovation 新奇的事物
novel a. 新颖的,新奇的likewise ad. in the same way