(1).昵称不可重复(2).精华+置顶分开显示2个标签 (3).普通帖子只考虑1精华，删除3 - #7

(1).昵称不可重复(2).精华+置顶分开显示2个标签 (3).普通帖子只考虑1精华，删除3#7

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