prehistoric汉语翻译：
a. 历史以前的, 史前的词型变化：
副词:prehistorically异体字:prehistorical英语解释：
形容词 prehistoric:

belonging to or existing in times before recorded history同义词：prehistorical

of or relating to times before written history

no longer fashionable

例句：

The study of the forms of life existing in prehistoric or geologic times, as represented by the fossils of plants, animals, and other organisms.古生物学对出现在史前或地质时代的生命的形成的研究，体现在植物、动物和其它有机体的化石上

详细解释：
pre.his.tor.ic
adj.（形容词）
Of, relating to, or belonging to the era before recorded history.
史前的：历史记载之前的、与之相关的或属于之的
Of or relating to a language before it is first recorded in writing.
有书面记载之前的语言的：有书面记载之前的语言的或与之相关的
【引伸】
pre.histor.ically
adv.（副词）