建立了数据存取对象模型，用实例说明了该对象的使用方法。

The object model of data store and access is established in this paper, and an example is given to explain the method for using the object.

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我们还得评估一下存储结构，确信我们可以存取对象需要的数据。

We must also evaluate our storage structure to make sure we can store, and retrieve, the data required by our objects.

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图中，锁定了互斥对象的线程能够存取复杂的数据结构，而不必担心同时会有其它线程干扰。

The thread in this image that has the mutex locked gets to access the complex data structure without worrying about having other threads mess with it at the same time.

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