unknown
unknown
英[ˌʌnˈnəʊn]美[ˌʌnˈnoʊn]
adj.未知的，不出名的，从未发生的，从不存在的；
n.不或不出名的人，未知的事物，<数>未知数，未知数；
复数：unknowns;
例句
He became a person whose whereabouts is[are] unknown to me.他的下落我不知道。
Motherhood was for her a journey into the unknown.做母亲当时对她来说是开始一次探险之旅。
The arrival of a taxi was unusual enough; an unknown woman getting out of it was sensational.来了辆出租车就够奇怪的了，从里面出来一名陌生女子就更引人注目。
Unknown to me, he had already signed the agreement.他背着我已签了协议。
Our new director is still an unknown quantity.我们对新来的主管知之甚少。
His ability to make decisions in a crisis is an unknown quantity.他在危机中作决定的能力还是个未知数。
Until last year he was still an unknown singer, but now his name has become a household word.去年以前他还一直是位默默无闻的歌手, 可如今他的名字已家喻户晓了。
An unknown man has stolen all her money.一个陌生人把她的钱偷光了。
Yesterday’s riot broke out at the instigation of an unknown politician.昨日的暴乱是由一个不的*客煽动起来的。
You must eliminate an unknown quantity.你必须消去一个未知数。
英语六级真题
What distinguishes a depression from a harsh recession is paralyzing fear - fear of the unknown so great that it causes consumers, businesses, and investors to retreat and panic.
出自-2013年6月阅读原文These "thought experiments" were pages of calculations signed and submitted to the prestigious journal Annalen der Physik by a virtual unknown.
出自-2010年12月阅读原文Into the Unknown The world has never seen population ageing before
出自-2010年12月阅读原文柯林斯高阶英汉双解学习词典释义
ADJ
不知道的；不了解的；未知的
If something is unknown to you, you have no knowledge of it.
例句
An unknown number of demonstrators were arrested...有数目不详的示威者遭到了逮捕。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？ADJ
不认识的；不熟悉的；陌生的
An unknown person is someone whose name you do not know or whose character you do not know anything about.
例句
Unknown thieves had forced their way into the apartment...不的窃贼破门闯入了公寓。I could not understand how someone with so many awards could be unknown to me.我想不通自己竟然不认识获了这么多奖的人。ADJ-GRADED
不出名的；无人知晓的；未获公众认可的
An unknown person is not famous or publicly recognized.
例句
He was an unknown writer.他是个名不见经传的作家。...a popular environment where both established and unknown artists can meet, talk and drink.成名和未成名的艺术家都可以聚会、聊天及喝酒的一处热门场所ADJ
从未发生的；从未存在的
If you say that a particular problem or situation is unknown, you mean that it never occurs.
例句
A hundred years ago coronary heart disease was virtually unknown in Europe and America.在100年前冠心病几乎不存在于欧洲和美洲。N-SING
（总称）未知事物，不为人知的地方
The unknown refers generally to things or places that people do not know about or understand.
例句
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。英汉词典释义
adj.
未知的
An unknown man has stolen all her money.一个陌生人把她的钱偷光了。不出名的, 度不高的
Until last year he was still an unknown singer, but now his name has become a household word.去年以前他还一直是位默默无闻的歌手, 可如今他的名字已家喻户晓了。从未发生的；从不存在的
n.
不或不出名的人； 未知的事物
There are many unknowns in science.科学上还有许多未知之处。<数>未知数
未知数；不知底细的人(或事物)
His ability to make decisions in a crisis is an unknown quantity.他在危机中作决定的能力还是个未知数。Our new director is still an unknown quantity.我们对新来的主管知之甚少。尚不知道；把…蒙在鼓里
Unknown to me, he had already signed the agreement.他背着我已签了协议。英英词典释义
Noun
1. an unknown and unexplored region;
"they came like angels out the unknown"2. anyone who does not belong in the environment in which they are found
3. a variable whose values are solutions of an equation
Adjective
1. not known;
"an unknown amount""an unknown island""an unknown writer""an unknown source"2. being or having an unknown or unnamed source;
"a poem by an unknown author""corporations responsible to nameless owners""an unnamed donor"3. not known to exist;
"things obscurely felt surged up from unsuspected depths in her"- Edith Wharton4. not famous or acclaimed;
"an obscure family""unsung heroes of the war"5. not known before;
"used many strange words""saw many strange faces in the crowd""don't let anyone unknown into the house"行业词典
土木工程： 未知量；
