形容词

1. 原始的；远古的；人类最初的
    You use primordial to describe things that belong to a very early time in the history of the world.

1. having existed from the beginning
    in an earliest or original stage or state

    e.g. aboriginal forests
           primal eras before the appearance of life on earth
           the forest primeval
           primordial matter
           primordial forms of life

    Synonym: aboriginalprimalprimevalprimaeval