| 单词 | unknown |
| 释义 | adjectivenoun🔑 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 人) 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 ˈquantity a 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 sb without 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/ noun the unknown [sing. ]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[C ]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。[C ]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。[C ](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。 |
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