| 单词 | 未知 |
| 释义 | DEFINITIVE EXAMPLES 权威例句〔KNOW/NOT KNOW〕Space is filled with unknown stars and uncharted galaxies. 宇宙中满是未知的星球和未标明的星系。朗文写作活用〔KNOW/NOT KNOW〕Starting a new relationship with someone is always a journey into the unknown. 开展一段新的恋爱关系总是像去探索一个未知的世界一样。朗文写作活用〔KNOW/NOT KNOW〕The fear of the unknown prevents many people from making significant changes in their lives. 对未知事物的恐惧使许多人不敢对自己的生活作出重大改变。朗文写作活用〔KNOW/NOT KNOW〕There are still a great many unknown insect species in the world. 世界上仍有许许多多未知的昆虫种类。朗文写作活用〔KNOW/NOT KNOW〕When Indian politicians established mass democracy in 1947, they knew they were entering uncharted territory. 1947年印度政治家确立了广泛的民主，那时他们知道这是在走进一个未知的领域。朗文写作活用〔MIA〕The fate of most MIAs in the war is still not known.这场战争中大部分失踪的士兵的命运现在仍然未知。韦氏高阶〔PREDICT〕What remains to be seen now is whether it is too late to save the rainforests. 现在未知的问题是抢救雨林是否已经太迟。朗文写作活用〔SUCCEED/SUCCESSFUL〕It is still unclear whether dotcom companies will continue to thrive in the long-term future. 网络公司将来是否能够长期繁荣下去，仍是个未知数。朗文写作活用〔air〕The trip to Moscow is still up in the air.去不去得成莫斯科还是未知数。外研社新世纪〔attribute sth to sb/sth〕The doctors have attributed the cause of the illness to an unknown virus.医生们认为这种疾病是由一种未知的病毒引起的。剑桥高阶〔be〕A is excellent, C is passing. Let n be the unknown quantity.A表示优秀，C表示及格。n表示未知数美国传统〔black box〕A device or theoretical construct with known or specified performance characteristics but unknown or unspecified constituents and means of operation.黑箱：一种仪器或理论学说，有已知或特定的性能特征但未知或不确定指出的构成成分或操作方法美国传统〔body forth〕Imagination bodies forth the forms of things unknown.想像力使未知事物的形象呈现于人们心中。21世纪英汉〔cardiomyopathy〕A disease or disorder of the heart muscle, especially of unknown or obscure cause.心肌病：一种心肌疾病，尤指病因未知或难解的心肌疾病美国传统〔caveat〕The spokesperson caveated the statement with a reminder that certain facts were still unknown.发言人对陈述做了限定，提醒大家某些事实尚未知晓美国传统〔challenge〕She was willing to accept the challenge of the unknown.她乐于接受未知事物的挑战。外研社新世纪〔change〕We resist change because of fear of the unknown.我们抗拒变革是因为对未知的恐惧。牛津搭配〔commercially〕Whether the project will be a commercial success is still uncertain.这个项目是否赚钱还是个未知数。柯林斯高阶〔commercial〕Whether the project will be a commercial success is still uncertain.这一项目能否赚钱还是个未知数。外研社新世纪〔conduit〕He was a reporter; a conduit between the known world and the unknown.他是一名记者, 是已知世界和未知世界之间的媒介。外研社新世纪〔cryptogenic〕Of obscure or unknown origin. Used of diseases.隐生的：起因模糊或未知的。用于指疾病美国传统〔crystallite〕Any of numerous minute rudimentary, crystalline bodies of unknown composition found in glassy igneous rocks.雏晶：任一种在玻璃状火成岩中发现的未知微粒晶体矿物美国传统〔dark〕The spacecraft is set to throw new light on to a dark corner of the solar system.这艘航天器可能会让人们对太阳系一个神秘未知的角落有更新的认识。外研社新世纪〔denote〕The sign X denotes an unknown number.X符号表示一个未知数。英汉大词典〔doubtful〕The company is facing a doubtful future.公司的未来还是未知数。韦氏高阶〔eliminate〕Mathematics To remove (an unknown quantity) by combining equations.【数学】 消去：通过等式合并消去（一个未知量）美国传统〔explore〕They were sent to explore unknown regions of Africa.他们被派去勘查非洲的未知地域。韦氏高阶〔fate〕The fate of the African wild dog hangs in the balance (= is uncertain).非洲野狗的命运还是个未知数。牛津搭配〔fear of the unknown〕A fear of the unknown kept her from changing jobs.一种对未知事物的恐惧使她不敢换工作。韦氏高阶〔fearlessly〕They ventured fearlessly into unknown lands.他们毫不畏惧，冒险进入到未知的土地。韦氏高阶〔flounder〕The country's economy is floundering and the future is uncertain.该国的经济正处于困境，未来还是未知数。麦克米伦高阶〔geriatric〕There is a question mark over the future of geriatric care.老年护理的未来还是一个未知数。外研社新世纪〔guide〕He claims that there were unknown forces guiding the outcome of the election.他宣称有未知力量在操控着选举结果。韦氏高阶〔improper〕It would be improper of me to comment before the election outcome is known.在选举结果未知的情况下我要作出评论是不恰当的。朗文当代〔invent〕To produce or contrive (something previously unknown) by the use of ingenuity or imagination.发明：运用智谋或想象生产或设计（以前未知的东西）美国传统〔jump〕The new law is a jump into the unknown.这部新法律效果如何还是个未知数。牛津搭配〔know〕I prefer the dangers that I knew to those I knew not.我宁冒已知的而不冒未知的危险。英汉大词典〔leap〕All weddings are a leap in the dark.所有婚礼都是一场未知的冒险。外研社新世纪〔literal〕A letter or symbol that represents a particular constant or number, known or unknown, and is not programmer-defined.文字：代表一特定常量或数字的可知或未知的字母或符号，由非编程者所规定美国传统〔lurch〕Starting her own business was a lurch into the unknown.自己创业对她来说是闯入了未知的世界。牛津搭配〔meeting〕It is unclear whether the meeting will take place as planned.会议是否会如期举行还是未知数。牛津搭配〔melt〕His anxiety about the outcome melted, to return later but not yet.他对未知结果的焦虑消散了，这种焦虑过后还会袭上心头，但至少现在还没有。柯林斯高阶〔moment〕At this moment in time, I don't know what my decision will be.此时此刻，我还未知道自己会作出什么决定。牛津高阶〔open sentence〕An expression that contains at least one unknown quantity and becomes true or false when a test value is substituted for the unknown.开语句：至少包含一个未知数并且在测验值被替换时出现对或错的数学方程式美国传统〔penetrate〕Explorers penetrated deep into unknown regions.探险者深入到了未知的地区。朗文当代〔potentiometer〕An instrument for measuring an unknown voltage by comparison to a standard voltage.电势计，电位计：通过与标准电压相比较而来测定未知电压的仪器美国传统〔premature〕Their criticisms seem premature considering that the results aren't yet known.鉴于结果尚未知晓，他们的批评似乎为时过早。剑桥高阶〔property〕Its precise chemical properties are unknown.其确切的化学特性未知。外研社新世纪〔quantity〕He is an unknown quantity for his rivals.对于对手们而言，他是个未知数。柯林斯高阶〔quantity〕To her the outside world was a totally unknown quantity.对她说来,外部世界完全是个未知数。英汉大词典〔question mark〕There are bound to be question marks over his future.他的未来势必会有很多未知因素。外研社新世纪〔represent〕X represents the unknown.X代表未知数。英汉大词典〔satisfy〕Mathematics To make the left and right sides of an equation equal after substituting equivalent quantities for the unknown variables in the equation.【数学】 （等式两边）满足…的条件：在等式中用等量代换未知变量后使等式的左右两边相等美国传统〔successive approximation〕A method for estimating the value of an unknown quantity by repeated comparison to a sequence of known quantities.逐次近似计算法：通过与已知的一系列量进行反复比较而估算一个未知量的值的方法美国传统〔terra incognita〕A new or unexplored field of knowledge.未知领域：一个新的未知的知识领域美国传统〔triangulation〕The location of an unknown point, as in navigation, by the formation of a triangle having the unknown point and two known points as the vertices.三角测量：通过以分别作（顶点）的两个已知点和一个未知点形成一个三角形，来求出或定位该未知点，如在航海中美国传统〔twilight〕Leaving a secure job for the twilight world of pop music may have been a mistake.抛弃安稳的工作进入充满未知的流行音乐界也许是个错误。剑桥高阶〔unaccounted for〕A fire on the ship killed a hundred or more passengers - some likely victims are still unaccounted for. 船上的大火让一百多名乘客丧生，可能还有些人生死未知。剑桥高阶〔unbeknownst〕Unbeknown.未知的美国传统〔uncertainty〕Life is full of uncertainties.人生充满了未知数。剑桥高阶〔uncertainty〕There is a great deal of uncertainty about the company's future .公司的前景有很多未知因素。朗文当代〔uncertain〕The future is uncertain.未来如何是个未知数。外研社新世纪〔uncertain〕They face an uncertain future.他们面对的是一个充满未知的未来。外研社新世纪〔uncharted〕Nuclear fusion has taken physicists into uncharted seas/territory/waters (= a new and unknown area).核聚变将物理学家们带入了全新的未知领域。剑桥高阶〔uncharted〕This new project will take us into uncharted territory.这个新项目将带领我们进入未知的领域。朗文当代〔undecided〕Much remains undecided about his future.对于他的将来尚有许多未知。韦氏高阶〔unforeseen〕Radiation may damage cells in a way that was previously unforeseen.辐射可能以某种前所未知的方式破坏细胞。外研社新世纪〔unidentified flying object〕A flying or apparently flying object of an unknown nature, especially one suspected to have been sent by extraterrestrial beings.不明飞行物：一个未知性质的飞行或似在飞行的物体，尤指被怀疑由外星人派来的美国传统〔unknowing〕Not knowing; unaware.未知的：不知道的；未觉察的美国传统〔unknown quantity〕To Margaret the outside world was an unknown quantity.对玛格丽特而言, 外面的世界是个未知数。外研社新世纪〔unknown〕Fear of the unknown is what brings out prejudice.对未知事物的恐惧是偏见之源。外研社新世纪〔unknown〕How did you expect us to proceed on such a perilous expedition, through unknown terrain.你怎么能指望我们如此冒险地穿越未知的地域，继续这一探险？柯林斯高阶〔unknown〕Ignorance of people brings fear, fear of the unknown.人们的无知会带来恐惧，对未知事物的恐惧。柯林斯高阶〔unknown〕It was a perilous expedition through unknown territory.这是一次穿越未知地域的危险之旅。外研社新世纪〔unknown〕Many unknowns hung over the economy.有许多未知因素威胁着经济。英汉大词典〔unknown〕Motherhood was for her a journey into the unknown.做母亲对她来说是开始一次未知之旅。牛津搭配〔unknown〕Racism is in some ways just a fear of the unknown.在某些意义上，种族主义只是一种对未知事物的恐惧罢了。剑桥高阶〔unknown〕The astronauts began their journey into the unknown.宇航员开始了对未知世界的探索之旅。朗文当代〔unknown〕The length of the war is one of the biggest unknowns.战争要持续多久是最大的未知数之一。外研社新世纪〔unknown〕The length of the war is one of the biggest unknowns.战争要持续多久是最大的未知数之一。柯林斯高阶〔unknown〕The long-term effects of the drug are still an unknown.这种药品的长期效果还是个未知数。朗文当代〔unknown〕There are so many unknowns in the proposal.这项提案中的未知数太多了。牛津高阶〔unknown〕This action represents a leap into the unknown.这个行动是对未知事物的大胆探索。牛津搭配〔unknown〕We're facing too many unknowns.我们要面对太多的未知因素。韦氏高阶〔unknown〕What the weather will be like on the day is, as always, the great unknown.到时天气会怎样一向都是个未知数。牛津搭配〔unknown〕X and Y in the equation are both unknowns.等式中的 X 和 Y 都是未知数。牛津高阶〔unspecified〕He is seeking unspecified damages from the airlines for personal injury.他正寻求向航空公司索取人身伤害赔偿, 金额未知。外研社新世纪〔venture〕As we set off into the forest, we felt as though we were venturing (forth) into the unknown.当我们动身进入那片森林时，感觉自己似乎正在冒险进入一个未知的世界。剑桥高阶〔wildcat〕An oil or natural-gas well drilled in an area not known to be productive.野猫井，初探井：在未知是否产出的地区钻探的油井或天然气井美国传统〔wise〕She never wised up to the fact that he was a swindler.她从未知道他是个骗子。文馨英汉〔x〕What is the value of x in the equation x - 4 = 3? 在方程式x-4=3中，未知数x的值是多少？韦氏高阶As we set off into the forest, we felt as though we were venturing forth into the unknown.我们动身进入那片森林时，仿佛感觉到冒险进入了一个未知的世界。剑桥国际He was shot down in enemy/unknown/uncharted territory.他在敌人的/未知的/地图未标明的领土上被击落。剑桥国际His greatest danger now lay in the unknown denizens of the water. 现在他最大的危险是未知的水中居住者。译典通Nuclear fusion has taken physicists into uncharted seas/territory/waters (= a new and unknown area).核聚变将物理学家们带入了全新的未知领域。剑桥国际Racism is in some ways just a fear of the unknown (= what is not familiar or known to you).在某种意义上，种族主义只是对未知事物的恐惧。剑桥国际The doctors have attributed the cause of the illness to an unknown virus.医生们把这种疾病的起因归于一种未知的病毒。剑桥国际The third candidate for the party leadership is a relatively unknown quantity.党领导的第三个候选人是何许人物相对说来仍是未知数。剑桥国际The weather is the one unknown factor which could ruin the whole plan.天气是一个可能会毁掉整个计划的未知因素。剑桥国际We use x as the symbol for an unknown quantity. 我们用ｘ表示一个未知数。译典通 |
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