Work item creation, transfer, and deletion must occur on the original object.

工作项的创建、传输和删除必须在原始对象上进行。

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With this approach, a DLL must provide explicit functions for object creation and deletion.

使用这种方式，一个DLL必须提供显式的对象构建和删除函数。

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When it's not needed, as in the case of simple object deletion, you don't have to worry.

当不需要它时，比如在简单的对象删除情形中，您不必担心。

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