可以在程序中显式地声明这些属性。
You can explicitly state these properties inside your program.
无需在每个复杂类型定义中显式地引用属性组。
There is no need to explicitly reference the attribute group in either complex type definition.
在显式设置此属性之前，请确保这是所需的行为。
Make sure that this is the desired behavior before setting this property explicitly.
在显式设置此属性之前，请确保这是所需的行为。
Make sure that this is the desired behavior before setting this property explicitly.
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