confederacy—A union of persons, parties, or states; a league 联盟=ally One that is allied with another, especially by treaty 同盟者

conceal—To keep from being seen, found, observed, or discovered; hide 隐藏=hide

dramatically—Arresting or forceful in appearance or effect 引人注目的=striking

durable—Lasting; stable 持久的;稳定的=lasting

domains—[计] 域=fields

domestic—Tame or domesticated. Used of animals 驯养的=tame

dominate—To enjoy a commanding, controlling position in 占支配地位=be prevalent in

divergence—Difference, as of opinion 意见分歧difference

diverse—Made up of distinct characteristics, qualities, or elements 多种多样的=various

dogma—An authoritative principle, belief, or statement of ideas or opinion, especially one considered to be absolutely true 信条=belief

distinction—The condition or fact of being dissimilar or distinct; difference 差别=difference

distinct—Readily distinguishable from all others; discrete 有区别的,不同的=different, separate, definite

dispute—To argue about; debate 就…进行争论=argument, disagreement

disseminate—To spread abroad; promulgate 散布=spread, distribute

disposal—The act or process of getting rid of something 除掉=get rid of

discrete—Constituting a separate thing; distinct 分离的=separate Existing as an independent entity 单独的

discard—To throw away; reject 丢弃,抛弃=get rid of

diffuse—To become widely dispersed; spread out 散布=travel To be transmitted, as light or sound; move or pass 传送

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

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