我们早已熟知运输是一项服务，供应商管理库存也是一项服务，在这里“服务”都是名词。
We have long known that transportation is a service and vendor managed inventory is a service-as in nouns.
然而，通过这种方式思考供应链管理服务，我们会把服务当做名词。
However, by thinking of supply chain management services in this way, we are focusing on service as a noun.
参与者名称通常是单数名词，譬如，年级管理员、客户以及支付出纳员。
Actor names are usually singular nouns such as Grade Administrator, Customer, and Payment Processor.
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