In Ruby 1.9, SimpleObject becomes the very top of the object hierarchy, with object as its immediate descendent.

在Ruby 1.9中，SimpleObject成为对象层级的顶端，Object作为它的直接后代。

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Object To evaluate the effect of lead on the health of descendent of working females.

目的评价铅对作业女工子代健康的影响。

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Object To evaluate the effect of lead on the health of descendent of working females.

目的评价铅对作业女工子代健康的影响。

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