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pre·con·di·tion AHD[prē'kən-dĭshʹən] D.J.[ˌpriːkənˈdɪʃən]K.K.[ˌprikənˈdɪʃən]n.（名词）- A condition that must exist or be established before something can occur or be considered; a prerequisite.前提：在某事发生或得到考虑之前必须存在或被承认的状况；先决条件
v.tr.（及物动词）pre.con.di.tioned, pre.con.di.tion.ing, pre.con.di.tions - To condition, train, or accustom in advance.预先处理：预先决定、训练或使习惯
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