大学生就业难，既有社会原因，政策原因，也有大学生自身原因。
College students' employment difficult, both social reasons, policy reason, also has its own reason college students.
当前两者未能有效接轨的障碍既有社会原因，又与高职院校教学及职业技能鉴定工作自身有关。
However, the hinders that they can't connect effectively is not only because of the social reasons, but also because of the higher vocational school teaching and vocational skill identification.
汉语中有形式多样的称谓并用现象，这种现象的产生既有社会原因，也有历史的和心理的原因。
There are various sets of reference terms in contemporary Chinese, which has social, historical and psychological reasons.
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