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unknown

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unknown

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Longman Dictionary of Contemporary English 5++朗文当代英语 5++LDOCE 5++朗文 5++un·known1 /ˌʌnˈnəʊn◂ $ -ˈnoʊn◂/ ●●● W2 adjective, adverb  1 NOT KNOWNAME OF A PERSONnot known about 不知道的[],未知的[] The murderer’s identity remains unknown. 杀人凶手身份仍然不明。 For some unknown reason, Mark quit his job and moved to Greece. 不知何故,马克辞掉工作移居希腊了。 a voyage through unknown territory 穿越未知海域的航行 An unknown number of people were killed. 丧生人数不详。2 FAMOUS#not famous 不知名的,不出名的 an unknown artist 一位名不见经传的艺术家3 unknown to somebody NOT KNOWwithout someone knowing 不为某人所知的 Unknown to his wife, Ron had been having an affair. 罗恩有了外遇,可他妻子并不知情。4. be an unknown quantity NOT KNOWif someone or something is an unknown quantity, you do not know what their abilities are or how they are likely to behave 未知的人[事物]
Examples from the Corpus
unknownThe year of Gabor's birth is unknown.She said the flowers were from an unknown admirer.an unknown artistAs an unknown author, it isn't easy to get your work published.Yesterday the village was quite unknown, but today it's on the front page of all the newspapers.There are still a great many unknown insect species in the world.The picture was painted in the 15th Century by an unknown Italian artist.Until their first single, the Beatles were virtually unknown outside Hamburg and Liverpool.Horn was beaten by a relatively unknown politician in the last election.For some unknown reason, Fred quit his job and moved to Alaska.We met near the Tomb of the Unknown Soldier.After they left Kathmandu they would be travelling through unknown territory.The Internet has opened up a marketplace where sellers and buyers are virtually unknown to each other.Most of the stars in the movie are unknown to US audiences.For some unknown reasonArcheologists have discovered a creeping village. For some unknown reason it has moved eleven times.
unknown2 noun [countable]  1 FAMOUS#someone who is not famous 不出名的人 At that point in her career she was still an unknown. 在她事业的那个阶段,她还是个无名小卒。2 something that is not known 不明的情况;未知的因素 The long-term effects of the drug are still an unknown. 这种药品的长期作用还是个未知数。3 the unknown a) HANOT KNOWa place that is not known about or that has not been visited by humans 不为人知 [人类尚未到达]的地方 The astronauts began their journey into the unknown. 宇航员开始了对未知世界的探索之旅。 b) RFNOT KNOWthings that you do not know or understand 未知事物 a fear of the unknown 对未知事物的恐惧
Examples from the Corpus
unknownAfter 30 years in show business, Butler is still an unknown.a movie made with a cast of complete unknownsA new version is in the pipeline in which unknowns will be replaced by celebrities.
Corpus known about not


unknown
I
unknown1 W2 /ˌʌnˈnəʊn◂ $ -ˈnoʊn◂/ adjective, adverb
 Word Family: adjective: knowing, knowledgeable, knownunknown; noun: knowledge, the unknown; adverb: knowinglyunknowingly, knowledgeably; verb: know
1. not known about:
    The murderer’s identity remains unknown.
    For some unknown reason, Mark quit his job and moved to Greece.
    a voyage through unknown territory
    An unknown number of people were killed.
2. not famous:
    an unknown artist
3. unknown to somebody without someone knowing:
    Unknown to his wife, Ron had been having an affair.
4. be an unknown quantity if someone or something is an unknown quantity, you do not know what their abilities are or how they are likely to behave

II
unknown2 noun [countable]
1. someone who is not famous:
    At that point in her career she was still an unknown.
2. something that is not known:
    The long-term effects of the drug are still an unknown.
3. the unknown
  a. a place that is not known about or that has not been visited by humans:
    The astronauts began their journey into the unknown.
  b. things that you do not know or understand:
    a fear of the unknown


🔑 un·knownBrE /ˌʌnˈnəʊn/ 🔊NAmE /ˌʌnˈnoʊn/ 🔊 adjective🔑 ~ (to sb) not known or identified 未知的;不详的;未被确认的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。🔊🔊🔑 (of people ) not famous or well known 不出名的;无名的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。🔊🔊🔑 never happening or existing 从未发生的;从不存在的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。🔊🔊an ˌunknown ˈquantitya person or thing whose qualities or abilities are not yet known 未知数(指尚不清楚,有待证实的人或事物)unknown to sbwithout the person mentioned being aware of it …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。🔊🔊
🔑 un·knownBrE /ˌʌnˈnəʊn/ 🔊NAmE /ˌʌnˈnoʊn/ 🔊 nounthe unknown [singular] places or things that are not known about 未知的地方(或事物)a journey into the unknown探险之旅a fear of the unknown对未知事物的恐惧 [countable] a person who is not well known 无名者;不出名的人A young unknown played the leading role. 演主角的是一个名不见经传的年轻人。🔊🔊 [countable] a fact or an influence that is not known 不明的情况;未知的因素There are so many unknowns in the proposal. 这项提案中的未知数太多了。🔊🔊 [countable] (mathematics 数学) a quantity that does not have a known value 未知数;未知量X and Y in the equation are both unknowns. 等式中的 X 和 Y 都是未知数。🔊🔊