Create a Customer entity class.
创建一个Customer实体类。
The customer (entity) identification process.
消费者(实体)识别流程。
Logistics is physical movement of the material entity from the supplier to the customer.
物流是物质实体从供应者向需求者的物理移动。
Logistics is physical movement of the material entity from the supplier to the customer.
物流是物质实体从供应者向需求者的物理移动。
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