a species of insect previously unknown to science
科学上以前尚未了解的一种昆虫
牛津词典
He was trying, for some unknown reason , to count the stars.
不知何故，他试图数星星。
牛津词典
The man's identity remains unknown.
这名男子的身份还是个谜。
牛津词典
an unknown actor
没有名气的演员
牛津词典
The author is virtually unknown outside Poland.
在波兰以外，这位作者实际上鲜为人知。
牛津词典
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。
牛津词典
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。
牛津词典
Unknown to me, he had already signed the agreement.
他背着我已签了协议。
牛津词典
a journey into the unknown
探险之旅
牛津词典
a fear of the unknown
对未知事物的恐惧
牛津词典
A young unknown played the leading role.
演主角的是一个名不见经传的年轻人。
牛津词典
There are so many unknowns in the proposal.
这项提案中的未知数太多了。
牛津词典
X and Y in the equation are both unknowns.
等式中的X和Y都是未知数。
牛津词典
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？
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。
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
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。
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。
Matter is an unknown somewhat.
物质是某种不明的东西.
《现代英汉综合大词典》
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.
《简明英汉词典》
Those who dared to launch out beyond the unknown waters became the discoverers of new lands.
那些敢于去人迹未至的海域航行的人成了新陆地的发现者.
《简明英汉词典》
The outcome of their discussion is still unknown.
他们讨论的结果仍然不清楚.
《现代英汉综合大词典》
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 BWhat 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Andrew Miller thinks social media needs more attention than banks mainly because it remains unknown how users' data will be taken advantage of.
2016年高考英语上海卷 阅读理解 阅读C 题设But how they're doing it is still unknown.
2015年高考英语北京卷 阅读理解 阅读C 原文Granddaughter Gayle Parks, 31—who works alongside her in the family business—said it remained unknown as to who nominated Irene for the award.
2019年高考英语全国卷2 语法填空 原文I could only have left it on the G9 bus, which was now speeding in the dark to some unknown station.
2019年高考英语天津卷 完形填空 原文I guess that there's probably some demanding work schedule, or social anxiety around stepping up to help for an unknown sport.
2019年高考英语全国卷2 阅读理解 阅读B 原文In theory, they should live by the French law is often ignored or unknown, thus making them into an interesting area of "lawlessness" in the world.
2016年高考英语四川卷 阅读理解 阅读C 原文Stress used to be an almost unknown word, but now that we are used to talking about it, I have found that people are beginning to get stressed about being stressed.
2016年高考英语上海卷 语法填空 B 原文The music allowed me to learn that teaching is about sharing and respect, tears and smiles, the knowing and the unknown and, most of all, an understanding of each other.
2015年高考英语湖南卷 完形填空 原文When most of us get a text message on our cell phone from an unknown person, we usually say "Sorry?"
2018年高考英语全国卷3 完形填空 原文Yet only one of his books is now in print, and his vast body of writings on music is unknown save to specialists.
出自-2010年考研阅读原文"they came like angels out the unknown"
"an unknown amount"
"an unknown island"
"an unknown writer"
"an unknown source"
"a poem by an unknown author"
"corporations responsible to nameless owners"
"an unnamed donor"
"things obscurely felt surged up from unsuspected depths in her"- Edith Wharton
"an obscure family"
"unsung heroes of the war"
"used many strange words"
"saw many strange faces in the crowd"
"don't let anyone unknown into the house"
unexploredquestionmysteryxvirginconundrumterritoryriddlepuzzlesecretbookdeeparcanumclosedsoilunknownfactor
unascertainedunmeasuredunidentifiedunsetundefinedindeterminateunfixedunsettledundecideduncalculatedundeterminedunestablished
undiscoveredunfamousuntracedunrecognizedunnamedunheard-ofunfamiliarnamelessuntrackedundistinguisheduntraveledunnoticedanonymousunchartedunexplored
inscrutablearcaneunrevealedundisclosedannouncedmysterioushermeticalsecretpuzzlingcrypticobscureenigmaticdarkenigmaticaluntoldtobehidden