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unknown

美 [ʌnˈnoʊn]
英 [ʌnˈnəʊn]
  • n.未知数;未知的地方(或事物);无名者;不出名的人
  • adj.未知的;不详的;未被确认的;不出名的
  • 网络狙击陌生人;玩命记忆;不明身份
复数:unknowns  
Unknown
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adj.
1.
~ (to sb)
未知的;不详的;未被确认的not known or identified
a species of insect previously unknown to science
科学上以前尚未了解的一种昆虫
He was trying, for some unknown reason , to count the stars.
不知何故,他试图数星星。
The man's identity remains unknown.
这名男子的身份还是个谜。
2.
不出名的;无名的not famous or well known
an unknown actor
没有名气的演员
The author is virtually unknown outside Poland.
在波兰以外,这位作者实际上鲜为人知。
3.
从未发生的;从不存在的never happening or existing
The disease is as yet unknown in Europe(= there have been no cases there) .
这种疾病至今尚未在欧洲出现过。
It was not unknown for people to have to wait several hours(= it happened sometimes) .
人们得等几个小时的事时有发生。
IDM
an unknown quantity
未知数(指尚不清楚,有待证实的人或事物)a person or thing whose qualities or abilities are not yet known
Unknown to me, he had already signed the agreement.
他背着我已签了协议。
unknown to sb
…尚不知道;把…蒙在鼓里without the person mentioned being aware of it
Unknown to me, he had already signed the agreement.
他背着我已签了协议。
n.
1.
[sing]
未知的地方(或事物)places or things that are not known about
a journey into the unknown
探险之旅
a fear of the unknown
对未知事物的恐惧
2.
[c]
无名者;不出名的人a person who is not well known
A young unknown played the leading role.
演主角的是一个名不见经传的年轻人。
3.
[c]
不明的情况;未知的因素a fact or an influence that is not known
There are so many unknowns in the proposal.
这项提案中的未知数太多了。
4.
[c]
未知数;未知量a quantity that does not have a known value
X and Y in the equation are both unknowns.
等式中的 X 和 Y 都是未知数。

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