英语词汇penknife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	penknife
词根词缀	Online Etymology Dictionary penknife n. early 15c., from pen, n.1 + knife, n.. So called because such small knives were used to sharpen quills.
随便看	apraxia apricate apricot April April fool a priori apron apropos apse apsis -apt- apt apt-, ept- apt(ept, att) apterous aptitude aptly aptness aqu- aqu aqua aqua- aqua, aqu, aque, aqui aqua-, aquatic-, aqui-, aqu-, -aquatically, aque-, -aqueous aquacade

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