史前期 shǐqiánqī prehistoric period Definitions Defs Origin Strokes Stroke Words Sentences Sents 史前期 shǐqiánqī prehistoric period the period of time before written history was recorded Cross-References Synonym 史前时代 shǐqiánshídài
史前期 shǐqiánqī prehistoric period the period of time before written history was recorded Cross-References Synonym 史前时代 shǐqiánshídài
