是指采购行为公开化；而秘密采购(Secret Purchasing)是指采购行为在秘密中进行着。大量采购是指采购数量多之采购行为；而零星采购是指采购数量零星化之采购行为。
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而秘密采购
And secret procurement
以上为机器翻译结果，长、整句建议使用 人工翻译 。
而媒介采购的不可告人的秘密就是他们往往不会考虑客户的最佳市场定位，而只关心在谁那能拿到更多回扣。
The dirty little secret of media buying is that those buyers often don't look to where their clients can reach their target markets best; they look for where they can get the best rebates.
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