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.

youdao

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.

youdao