n.推演，推理，演绎；（推理所得出的）结论；扣除，减除；扣除的量 变形： 复数：deductions 英英释义： deduction[ di'dʌkʃən ]n.a reduction in the gross amount on which a tax is calculated; reduces taxes by the percentage fixed for the taxpayer's income bracket同义词：tax write-offtax deductionan amount o