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n.代替;代用;替换;取代(作用) 变形: 复数:substitutions 英英释义: substitution[ ,sʌbsti'tju:ʃən ]n.an event in which one thing is substituted for another同义词:permutationtranspositionreplacementswitchthe act of putting one thing or person in the place of another:"he sent Smith