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。 ■(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
noun
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。 ■(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量。 ■(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。