The in-house systems did not make full use of the available point of sales data, and required heavy manual maintenance.
机构内部的系统没有充分利用现有的销售数据，并且需要繁重的手工维护。
The in-house systems did not make full use of the available point of sales data, and required heavy manual maintenance.
机构内部的系统没有充分利用现有的销售数据，并且需要繁重的手工维护。
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