英语词汇covariance的发音释义、词根词缀、结构分析、同源词、词频及词根记忆法-英语词根词缀词典

词汇	covariance
词根词缀	Online Etymology Dictionary covariance 1878, from covariant (1853), from co- + variant.
随便看	seism, seismo seize seizure sejm sek- sel- selah seldom select selection selective selen- selena- Selene seleni- selenio- selenium seleno- selenocentric selenograph selenographer selenology seleno-, selen- selen, seleno, seleni Seleucid

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