This class builds a hash table of key-value pairs at the class instantiation.

此类在类实例化时构建一个键值对哈希表。

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The maps are maintained in parallel and are constructed as part of the class instantiation process.

这些映射可以并行进行维护，并且可以构建为类实例化过程中的一部分。

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Decorators do not currently let you modify class instantiation per se, but they can massage the methods that are attached to the class.

decorator目前并不允许您修改类实例化本身，但是它们可以修改依附于类的方法。

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