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史前史 shǐqiánshǐ
eng.geol. prehistory
史前史
: 62 phrases in 14 subjects
Agriculture1
Architecture4
Art2
Desert science1
Economy1
Engineering geology4
Explosives and Explosive Ordnance Disposal1
Finances1
General30
Genetics1
Metallurgy1
Oil / petroleum2
Securities1
Technology12