4周搞定2000+托福核心词
未知的；陌生的，默默无闻的;n. 未知数；未知的事物，默默无闻的人
unknown
常考释义
These expeditions were likely driven by population growth and political dynamics on the home islands, as well as the challenge and excitement of exploring unknown waters.
远征可能是由本土的人口增长、政治动荡以及探索未知水域的挑战和兴奋所驱动的。
来源于：阅读OFFICIAL5 P2adj. 不出名的；无名的
She's a relatively unknown woman candidate.
她是位名不见经传的女候选人。
adj. 不认识的；不熟悉的；陌生的
She had so many awards but was completely unknown to me.
她拿了这么多奖，但我对她一无所知。
adj. 从未发生的；从未存在的
A hundred years ago coronary heart disease was virtually unknown in Europe.
100年前的欧洲几乎不存在冠心病。
It is not unknown for travellers to forget their passports.
旅客忘带护照的事时有发生。
adj. 未知的；不详的；不明的
An unknown number of demonstrators were arrested.
有示威者遭到了逮捕，具体人数不详。
He was attacked by four unknown assailants.
他遭到四个身份不明的攻击者的袭击。
The motive for the killing is unknown.
杀人动机尚不明确。
Hyde's whereabouts were unknown.
海德下落不明。
Unknown to her, I had already seen my lawyer.
我已经背着她见过我的律师了。
adj. 未确立的；未发现的；未经探究的
It was a perilous expedition through unknown territory.
这是一次穿越未知地域的危险之旅。
n. the unknown：未知的事物（或地方）
Fear of the unknown is what brings out prejudice.
对未知事物的恐惧是偏见之源。
n. 不出名的人；无名者
Within a short space of time a group of complete unknowns had transformed television comedy.
在很短的一段时间内，一群毫无名气的演员使电视喜剧得以改头换面。
n. 未知的事物
The length of the war is one of the biggest unknowns.
战争要持续多久是最大的未知数之一。
n. 未知数【数】
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