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单词 permanence
释义 per·ma·nence
\ˈpərmənən](t)s, ˈpə̄m-, ˈpəim- also -mnən]\ noun
(-s)
Etymology: Middle English, from Middle French, from Medieval Latin permanentia, from Latin permanent-, permanens + -ia -y
1. : the quality or state of being permanent : durability
 < a pioneer town … that has not yet acquired an air of permanence — Ivor Jones >
 < the permanence of his achievement — Hilaire Belloc >
 < the degree of permanence of different ruling inks — Ruling Inks & Dyes >
2. : two adjacent like signs in a series of positive and negative signs in mathematics — opposed to variation
 < in the series of coefficients of the polynomial 3x3-x2-8x+7 there is one permanence >
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更新时间:2025/3/25 0:47:20