This descriptor is included as a member of the service class.
这个描述符被包括在服务类成员之中。
DocumentSelection is a class for the service used to represent a collection of documents.
DocumentSelection是面向此服务的类，该服务用来代表一个文档集。
Like a class object, the requester application is capable of treating the service as one.
如同类对象，请求者应用程序能够将服务看作是一个整体。
The service of the hotel is class-A.
这家宾馆服务一流。
Makes it sense to create an object of a class which extends Service?
它意义创建一个对象的类扩展服务吗？
Makes it sense to create an object of a class which extends Service?
它意义创建一个对象的类扩展服务吗？
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