副词

1.未知的，未被确认的

2.不出名的，无名的

3.从未发生的，从不存在的

n.

1.未知的地方（或事物）

2.可数名词：无名者，不出名的人

3.可数名词：不明的情况，未知的因素

4.可数名词：【数学】未知数，未知量

英语解释

not known before

not famous or acclaimed

an unknown and unexplored region

not known

not known to exist

being or having an unknown or unnamed source

a variable whose values are solutions of an equation

anyone who does not belong in the environment in which they are found