大学时光应该是学生的自主性得到重要成长以及逐渐变成熟的时期。

The college years are supposed to be a time for important growth in autonomy and the development of adult identity.

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我想这是我已经变成熟的标志。

I think that is a sign of maturity.

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那些建议中国应该变成熟的家伙，其实自己更应该变成熟点。

Suggesting China should grow up is really an admission that some growing up needs to be done needs to be done by the suggester.

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