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adjective | noun | to phrases
Frasnian adj.
earth.sc. 弗拉斯〔阶〕 (D₃,欧洲)
geol. D3费拉斯阶
 English thesaurus
Frasnian n
geol. Frs (MichaelBurov)
Frasnian
: 4 phrases in 4 subjects
Earth sciences1
Geology1
Oil / petroleum1
Technology1