unknown是什么意思？

unknown

英[ˌʌnˈnəʊn] 美[ˌʌnˈnoʊn]

adj. 未知的，不出名的，从未发生的，从不存在的；
n. 不知名或不出名的人，未知的事物，<数>未知数，未知数；

复数：unknowns;

例句

查看更多关于 “unknown” 的例句

同义词

n.
unknown的同义词之：未开发的地方,不知道的事物,秘密,迷,神秘的人或物
unexplored question mystery x virgin conundrum territory riddle puzzle secret book deep arcanum closed soil unknown factor
adj.
unknown的同义词之：不确定的,不识别的
unascertained unmeasured unidentified unset undefined indeterminate unfixed unsettled undecided uncalculated undetermined unestablished
unknown的同义词之：未开发的,未研究的,不著名的,匿名的
undiscovered unfamous untraced unrecognized unnamed unheard-of unfamiliar nameless untracked undistinguished untraveled unnoticed anonymous uncharted unexplored
unknown的同义词之：没有泄露的,神秘的,秘密的,不可思议的
inscrutable arcane unrevealed undisclosed announced mysterious hermetical secret puzzling cryptic obscure enigmatic dark enigmatical untold to be hidden
unknown的同义词之：生疏的,陌生的,新奇的
alien new novel unfamiliar foreign strange
unknown的同义词之：其他释义
stranger

反义词

adj.
unknown的反义词之：不知道的
known
unknown的反义词之：其他释义
well-known eminent famous known

词组

unknown to
without the knowledge of 未被…知晓的

英语四级真题

The scientist confirmed the snake was a previously unknown species after conducting a genetic analysis of tissue samples.
出自-2017年6月听力原文
According to Leslie, those who ridiculed former Defense Secretary Donald Rumsfeld for his 2002 remark that we have to be wary of the unknown unknowns were mistaken.
2017年12月四级真题（第二套）阅读 Section B

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... 不知名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, 知名度不高的
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.
不知名或不出名的人；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 Wharton
4. 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；

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