You can extend the Book type to create a BookSales type using the extension base keyword.
可以通过使用extensionbase关键字扩展Book类型以创建BookSales 类型。
In the scenario, the domain defines a domain specialization entity for the apiname base element as well as the keyword ancestor element (which is the base element for apiname).
在该方案中，域为apiname基本元素和keyword祖先元素(它是apiname的基本元素)定义了域专门化实体。
Notice that now in a class definition, keyword arguments are allowed after the list of base classes—generally speaking, class Foo(*bases, **kwds): pass.
请注意，现在，在类定义中，关键字参数被允许出现在基类列表之后 —通常来讲，即class Foo(*bases, **kwds): pass。
In the scenario, specialization hierarchies include the keyword ancestor element provided by the base topic and the apiname element provided by the programming domain.
在该方案中，专门化层次结构包括基本主题提供的keyword祖先元素和编程域提供的apiname元素。
This minimizes the potential invasive impact of introducing a new keyword in the language, something that we feel is very important to users with an existing code base.
这会尽量减轻在语言中引入新关键字可能造成的侵害性影响，我们感觉这对具有现有基本代码的用户来说非常重要。
BOFOOMEN network-system communication keyword search to help you quickly access your target customer base search vision.
Bofoomen网络系统通信关键字检索，以帮助您快速进入你的目标客户群，搜索视野。
BOFOOMEN network-system communication keyword search to help you quickly access your target customer base search vision.
Bofoomen网络系统通信关键字检索，以帮助您快速进入你的目标客户群，搜索视野。
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