prehistories
- n.史前时期;(事物发展的)初期,开始阶段,萌芽时期;远古时期
- prehistory的复数
prehistories
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prehistoric culture
pineal gland
pure binary numeration system
participial
participles
P.E.
political uncertainty
plate tectonic theory
pollutants
pathologies
Pliocene
public opinions
popular opinion
patriarchal
polytheistic
Project life cycle
project selection
Project team
Project Plan
Patriotism Education