Groups can be categorized as collective such as main, secondary and category group.

团体可归类为集体像主要的，次要的和类别组。

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Private secondary schools should focus on its construction of teachers groups.

民办中学应注重其教师队伍建设。

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Private secondary schools should focus on its construction of teachers groups.

民办中学应注重其教师队伍建设。

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