这对于直接在业务和服务层公开的抽象非常重要。
This is particularly important for abstractions directly exposed at the business and service layer.
管理是松耦合问题的关键，而松耦合是服务抽象的核心架构原则。
Management is the key to loose coupling-the core architectural principle behind the service abstraction.
操作是被服务支持的行为的抽象定义。
An operation is an abstract definition of an action supported by the service.
选择正确的抽象级别是服务建模的一个关键问题。
To select the right level of abstraction is a key service modeling issue.
无论选择哪一个对当前任务来说都是很好的服务抽象。
Choose whichever one is a good abstraction for the task at hand.
无论选择哪一个对当前任务来说都是很好的服务抽象。
Choose whichever one is a good abstraction for the task at hand.
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