英 [ˌʌnˈnəʊn] 美 [ˌʌnˈnoʊn]
adj. 未知的，未被确认的；不出名的，无名的；从未发生的，从不存在的
n. 无名者，不出名的人；不明情况，未知因素；不为人知的地方，未知的事物（the unknown）；（数）未知数，未知量
复数unknowns
unknown /ʌnˈnəʊn/ TEM4
形容词 If something is unknown to you, you have no knowledge of it. 不了解的
An unknown number of demonstrators were arrested.
不知多少示威者被逮捕了。
The motive for the killing is unknown.
杀人的动机不明。
可数名词 An unknown is something that is unknown. 未知的事物
The length of the war is one of the biggest unknowns.
战争的持续时间是其中一个最大的未知数。
形容词 An unknown person is someone whose name you do not know or whose character you do not know anything about. (姓名或性格) 未知的
...the tomb of the unknown soldier.
…那名无名士兵的墓。
形容词 An unknown person is not famous or publicly recognized. 不出名的
He was an unknown writer.
他是个没有名气的作家。
可数名词 An unknown is a person who is unknown. 不为人知的人
Within a short space of time a group of complete unknowns had established a wholly original form of humour.
在短短的一段时间内，一群完全不为人知的人已始创了一种新式幽默。
形容词 If you say that a particular problem or situation is unknown, you mean that it never occurs. 从未发生过的
A hundred years ago coronary heart disease was virtually unknown in America.
100年前，冠心病在美国几乎从未有过。
单数型名词 The unknown refers generally to things or places that people do not know about or understand. 未知事物
Ignorance of people brings fear, fear of the unknown.
人的无知带来了恐惧，对未知事物的恐惧。
an unknown and unexplored region
they came like angels out the unknown
同义词： unknown region / terra incognita
a variable whose values are solutions of an equation
同义词： unknown quantity
not known
an unknown amount ; an unknown island ; an unknown writer ; an unknown source
being or having an unknown or unnamed source
a poem by an unknown author
同义词： nameless / unidentified / unnamed
not known to exist
未知性-引用次数：3
Taking into account the economic, security and other factors, the research on how to design and debug the controller using the simulation system is great significant because underwater manipulator’s working environment is complexity and unknown.
由于水下机械手工作环境的复杂性和未知性,同时考虑到经济性、安全性等因素,研究如何利用仿真系统对于机器人运动控制器的设计和调试具有重要意义。
未知
未知态氮-引用次数：6
未知的-引用次数：9
未知量-引用次数：2
未知数
未知
未知的 ( Unknown )：OGRE不知道有这么一个资源。资源组里面保存有它的文件名，但OGRE还不知道它用来干什么的。
... 2011年11月1日，由连姆·尼森主演的惊悚悬疑电影《不明身份》（Unknown）在中国内地正式上映。这不是中国观众第一次在大银幕上看到连姆·尼森，但这个身高1.93米的男人有足够将你拉进电影院的大把魅力…
...人无法发出SH的音，于是使用古希腊的CK“开”的音。 写法上与拉丁X相似，渐渐的就通用起来就成为了X。 数学含义 未知数（unknown number）是在解方程，解比例中有待确定的值。 中国 我国古代并不用符号来表示未知数，而是用筹算来解方程。
... 色彩空间 : sRGB 文件来源 : unknown 场景类型 : unknown ...
[数]未知数；未知的事物，默默无闻的人
The motive for the killing is unknown.
杀人的动机不明。
The immediate cause of death is unknown.
造成死亡的直接原因不明。
Unknown attackers riddled two homes with gunfire.
不明来路的袭击者用枪把两座房屋打得千疮百孔。
But now she is on her own, "with no direction home, like a complete unknown, like a rolling stone."
VOA : special.2009.06.21
- "She lived unknown and few could know"-- how can she be unknown if few know anything about her?
她不为人知地活着，鲜有人知道她“,如果有任何人知道关于她的任何事情,又怎么能说他不为人知呢？
文学理论导论课程节选 : 耶鲁公开课
A kind of a pin used to hold your cloak together, called a fibula, unknown in the previous period.
一种别住披风的别针,称之为扣针,这在之前的时期从未出现过
古希腊历史简介课程节选 : 耶鲁公开课
So an astronaut on the flight of Gemini Four, Ed White,took that first frightening step into the unknown.
VOA : special.2009.07.01
And the strong man, still holding the small child, drifted away on the shadowy river that flows forever to the unknown sea.
VOA : special.2009.06.06
Not so lucky were the shipwrecked crew of an unknown vessel washed up in 1860.
An unknown state Senator, Kay Hagan, now has pulled ahead of Elizabeth Dole in many polls.
Hawk, a 31-year-old wholesome-looking father of two, was virtually unknown outside the skateboarding world three years ago.