英语词汇productivity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	productivity
词根词缀	Online Etymology Dictionary productivity n. 1809, "quality of being productive," from productive + -ity. An earlier word for this was productiveness (1727). Economic sense of "rate of output per unit" is from 1899.
随便看	appropriation approval approve approximate approximately approximation appurtenance appurtenances appurtenant A.P.R. apraxia apricate apricot April April fool a priori apron apropos apse apsis -apt- apt apt-, ept- apt(ept, att) apterous

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