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重点词汇精讲Unit4包裹，邮包；一批，一群；•Parcel v/n.同根词n.parceling缠包帆布条；打包近义词package/enlace词组part andparcel必要部分；重要的部分part andparcel of不可缺少的一部分parcel post邮政包裹；包裹邮递land parcel地块air parcel.空运parcel out分配，把…分成几份parcel ofland地片一.擦去……的灰尘；把粉末撒于沙尘；灰尘；粉末;•Dust v/n.同根词adj.dusty落满灰尘的n.dusler抹布，弹子；除尘器；打扫灰尘的人dustiness灰蒙蒙；多灰尘；尘污近义词powder/dirt词组in thedust死了；入土dust removal除尘，除尘设备dust collector吸尘器；集尘器coal dust煤尘;煤粉dusicolleclion收尘；集尘；吸尘dust control防尘；尘埃控制；飞尘捕集dust concentration粉尘浓度；尘末浓度dust catcher除尘器dust storm尘暴dust remover除尘器；扑灰机dust explosion尘爆；尘末爆炸dust off抹去灰尘dust emission粉尘排放，烟尘排放；［机］扬尘量fine dust细粉尘flue dust.烟灰；烟道灰；炉顶灰dust filter滤尘器；尘土过滤器dust content尘含量；含尘率dust particle尘粒；微尘dust andashes尘土和炉灰；令人失望的事物dust bowl风沙侵蚀区.棉，棉花；棉布；.开始领会，开始明白•Cotton n/v同根词adj.cottony棉的；像棉样的；起毛的；柔软的近义词square/identify/coincide词组cotton fabric棉布;棉纤物cotton yarn棉纱；棉纱线cotton fiber棉纤维cotton spinning棉纺；棉纺工艺cotton cloth棉布cotton textile棉纺织品raw cotton原棉；未加工棉cotton ball棉球；硼钠钙石cotton wool原棉;棉绒；脱脂棉cotton fibre棉纤维cotton goods棉制品；棉纺织品；应交税的商品cotton thread棉线white cotton白棉花cotton pad化装棉；棉褥cotton piecegoods棉布匹combed cotton精梳棉；精棉；精梳棉纱organic cotton有机棉cotton mill.纺织厂cotlon canvas棉帆布；棉质油画布严格死板的，僵化的；•Rigid adj.同根词adj.rigorous严格的，严厉的；严密的；严酷的adv.rigidly严格地；坚硬地；严厉地；牢牢地n.rigidity［物］硬度，［力］刚性；严格，刻板；僵化;坚硬rigor严厉;精确；苛刻；僵硬rigidness坚硬；严厉vi.rigidify僵化;固定近义词strict/precise/wooden/accurate词组rigid body刚体；刚性体rigid frame刚性构架rigid framebridge刚构桥，刚架桥;刚架式桥梁rigid plastic硬质塑料rigid pavement刚性路面；混凝土路面rigid foam硬质泡沫塑料；硬塑胶rigid foundation刚性基础；刚性地基；钢性基础rigid connection刚性联接rigid polyvinylchloride硬聚氯乙烯rigid structure［化］刚性结构rigid system刚体系;刚性系统rigid support刚性支承;刚性支架；刚强支柱rigid rotor刚性转子；刚接式旋翼；整体转筒rigid steel硬钢.拖，拽；用鼠标拖动；•Drag v同根词adj.dragging拖延的；拖曳用的n.dragger拖曳等之人或物；小型拖网渔船近义词pull/tow词组drag on拖延drag anddrop拖放drag reduction减阻drag coefficient阻力系数；曳引系数drag in插入讨论中；拉进drag force拖曳力，曳力click anddrag单击并拖动drag down向下拖aerodynamic drag空气动力阻力friction drag摩阻；磨擦阻力air drag空气阻力drag along拖着脚走，慢慢地行走drag out拖延frictional drag摩擦阻力；摩擦拽力drag link拉杆drag racing直线加速赛；短程高速赛车；减重短程高速汽车赛；街头飕车（汽车）drag torque阻力矩；曳力矩；拖曳转矩drag chain牵引链wave drag波阻drag over拖过；拖出正式〉给予特权，特别优待；特权，特殊待遇；荣•Privilege v.v/n.幸，光荣；同根词adj.privileged享有特权的；近义词franchise/peculiar词组special privilege特权;特别优惠；特殊许可access privilege存取特权;访问特权;user privilege用户权限辞（职），放弃（工作或职位）；（使）听任，（使）•Resign v.顺从同根词adj.resigned顺从的；已辞职的；己放弃的adv.resignedly听从地；服从地n.resignation辞职；放弃；辞职书；顺从近义词yield/desert/refer/quit词组resign from辞职resign oneselfto使听从于；听任；听凭于；甘受resign onespost辞职•Contract n.合同，契约/v.（使）收缩，缩小；签合同，订立契约同根词adj.contractual契约的,合同的adv.contractually合约地；合同性地；契约规定地n.contractor承包人；立契约者contraction收缩，紧缩；缩写式；害病近义词affect/catch/communicate词组contract wilh承包；与…订有合约contract in［法］保证承担义务labor contract劳工合同contract management合同管理breach ofcontract违约；违反合同sales contract销售合同insurance contract保险契约，保险合同contract price合约价格；发包价格construction contract建筑包工合同under thecontract依据本合同employment contract雇佣合同；聘约purchase contract购货合同sign acontract签订合同；签合同；签署合同by contract承包；根据合同under contract根据合同psychological contract心理契约;精神契约contract terms合同条款on contract按合约方式service contract劳务合同social contract社会契约授予，给予；承认.补助金，拨款;•Grant v./n同根词grantee受让人；被授与者grantor授予者；［法］让与人granter出让方；出让人；授与者；转让者近义词award/let/accept/recognize/agree词组take forgranted认为…理所当然government grant政府批地书,政府补助金Relay v.传递，传达（信息、新闻等）；中继转发，转播近义词retransmit词组lorch relay火炬传递；火炬接力；圣火传递relay protection继电保护relay race接力赛frame relay［计］帧中继time relay时间继电器electromagnetic relay电磁式继电器relay stalion中继站；中断电台protective relay保护继电器solid staterelay固态继电器distance relay测距继电器differential relay差动继电器medley relay混合泳；混合泳接力current relay电流继电器；电摆电器relay syslem中继系统；全继电器制relay contact继电器触点，继电匹点intermediate relay中间继电器power systemrelay protection电力系统继电保护原理thermal overloadrelay热继电器;热过载继电器alarm relay警报继电器thermal relay［电］热继电器。
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