differentiate---To constitute the distinction between区分=distinguish To perceive as being different or distinct区分
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
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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
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