In most instances, the actual class of the Content Store object returned will be known so it can be cast directly.

在大多数情况下，返回的内容库对象的实际的类是已知的，因此可以直接进行转换。

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This reduces the amount of physical memory required to store class data when multiple JVMs run on the same machine.

当多个JVM在同一台机器上运行时，这将减少存储类数据所需的物理内存量。

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For our RIGHT hierarchy, we'll use a single table (TB_RIGHT) to store the entire class hierarchy.

对于我们的RIGHT层次结构，我们只使用一个表(tb_right)来保存整体类层次结构。

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Retailer JC Penney hired former Apple and Target executive Ron Johnson with high hopes that he would save the lumbering middle-class department store from its continued slide.

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