dictate——To prescribe with authority; impose命令;To issue orders or commands命令=determine To reach a decision; resolve解决,决定,=prescribe To set down as a rule or guide; enjoin指定,规定
   devastate——To lay waste; destroy变成废墟,荒芜;破坏=ruin
   device——A contrivance or an invention serving a particular purpose, especially a machine used to perform one or more relatively simple tasks机器=instrument A device for recording, measuring, or controlling, especially such a device functioning as part of a control system仪表
   devoid of ——free of无……的,免于……的;摆脱了……的
   destruction——The act of destroying毁灭=demolition The act or process of wrecking or destroying, especially destruction by explosives.摧毁破坏
   detect——To discover or ascertain the existence, presence, or fact of查明;发现=discover, sense To become aware of; perceive感觉意识到
   detectable——Can be discovered or ascertained the existence, presence, or fact可查明;可发现apparent, measurable,sizable
   derive——To obtain or receive from a source得到=obtain,
   To issue from a source; originate起源于=stem from
   depression——An area that is sunk below its surroundings; a hollow下陷处=low
   depressed——Low in spirits; dejected情绪低落的;沮丧的=saddened
   deposit——To put or set down; place放置=place, lay
   deplete——To decrease the fullness of; use up or empty out消灭,用完或用光=exhaust, run out
   dense——Hard to penetrate; thick浓厚的=thick, heavy
   delicate——Marked by sensitivity of discrimination敏锐的=sensitive
   Easily broken or damaged脆弱的=fragile
   delicate——Considerate of the feelings of others体贴的=careful, intentionally
   deft——Quick and skillful; adroit灵巧的=skilled
   extract——To remove for separate consideration or publication; excerpt摘录=remove
   extend——To stretch or spread (something) out to greater or fullest length延伸=increase, stretch, outspread
   extensive——Large in extent, range, or amount广大的=wide, far from reaching
   exponential——Containing, involving, or expressed as an exponent指数的=rapid, increase
   exert——To bring to bear; exercise对…施加=apply To putsintosaction使用,运用,=cause
   exhibition——The act or an instance of exhibiting展览=display
   exorbitant——Exceeding all bounds, as of custom or fairness过高的,昂贵的=expensive
   expand——To increase the size, volume, quantity, or scope of; enlarge扩大=increase
   excessive——Exceeding a normal, usual, reasonable, or proper limit过量的=extreme Extending far beyond the norm过分的
   exclusion——The condition or fact of being excluded.排除或被排除的状态keep out of躲开;置身于…之外
   exalted——Lofty; sublime; noble高的,崇高的;高贵的=superior Of great value or excellence; extraordinary价值巨大或品质优越的;突出的