求翻译：与未参保的农民工相比，已经参加养老保险的农民工，整体上呈现出年纪较大，工资收入更高的特征，但教育程度并没有显著的差别。是什么意思？

Compared with uninsured migrant workers, migrant workers have participated in the old-age insurance, the whole show out older, higher wage income characteristics, but the level of education and no significant difference.

And is not covered by the workers, has been engaged in insurance on the whole, the peasant in the older, higher wage income characteristics of education, but there are no marked differences.

The peasant laborer has not guaranteed who with the senate compares, already participated in the old-age insurance the peasant laborer, in the whole presented the age to be big, wage income higher characteristic, but education level not remarkable difference.

Compared with migrant workers are not insured, already participate in the peasant workers endowment insurance overall showing older, wages higher features, but there is no significant difference in levels of education.

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