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- not known or familiar不知道的; 不熟悉的：
exploration into unknown territory
对未知领域的探索
his whereabouts are unknown to his family.
他的行踪连家人都不知道。
1.1
- (of a performer or artist) not well known or famous（演员, 艺术家）未被公众承认的; 无名的。
- an unknown person or thing未知之人（或物）：
she is a relative unknown.
她是一个相对来说不为人所知的人。
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- Mathematics an unknown quantity or variable【数】未知数; 未知量; 未知元：
find the unknown in the following equations.
从下列方程式中找出未知数。
1.1
the unknown
that which is unknown未知的事物：our fear of the unknown.
我们对未知事物的恐惧。
短语
unknown to
- without the knowledge of未被…知晓的。
派生词