When the connector needs to add a system property to a Content object, it will first look up the property description from the global item class.

当连接器需要将一个系统属性添加到Content对象中时，它首先从这个全局条目类查询属性描述。

youdao

Finally, the third kind of property in the example connector, the ad-hoc property, gives no way of determining what the property description should be.

最后，对于示例连接器中的第三种属性——专用属性，无法判断属性描述应该是什么。

youdao

All that you can do in this case is to define a generic, unrestrictive property description for each ad-hoc property, and use it to create each property object.

在这种情况下，只需为每个专用属性定义一个一般的不受限制的属性描述，并使用它创建每个Property对象。

youdao

Property descriptions that aren't part of an item class can still be used to create properties; it's not required that a property description be part of an item class.

还可以使用不属于条目类的属性描述创建属性；不要求属性描述是条目类的一部分。

youdao

Property descriptions that aren't part of an item class can still be used to create properties; it's not required that a property description be part of an item class.

还可以使用不属于条目类的属性描述创建属性；不要求属性描述是条目类的一部分。

youdao