由于流通系统不健全，许多人民短缺的商品无法销售出去。
Because the distribution system was poor, many goods went begging although people wanted them.
独特的空气流通系统功能的通风口，让凉爽，清新的空气进入。
Unique air circulation system features intake vents to allow cooler, fresh air to enter.
剩下的系统都是基于可控的空气流通来通风的。
进销系统是商品流通领域一个重要的基础性工作。
Sales of goods into the system is an important area of the infrastructure work.
因此物资管理信息系统需要记录物资流通的全过程。
So material management information system mast register the whole process of material circulation.
因此物资管理信息系统需要记录物资流通的全过程。
So material management information system mast register the whole process of material circulation.
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