Besides these, it is essential to find a proper position for advertisements which is classification.

除了这些，为广告寻找合适的位置也是必要的，这就是分类。

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Pay attention to, is the complete classification level, there is a clear position limit.

注意，完全分类是级别性的，是有明确点位界限的。

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Pay attention to, is the complete classification level, there is a clear position limit.

注意，完全分类是级别性的，是有明确点位界限的。

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