请教：junior or community college是什么学校？

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In many foreign countries, this level of education often embraces the junior or community college as well as the first two years of university
training.

A junior or community college, such as those maintained by some state systems of higher education, offers a 2-year program of general
education and/or technical training that serves either as terminal schooling or as preparation for more specialized study in a 4-year college or
university.

首先，这两句中的 junior or community college 是一种什么学校？能介绍一下吗？
然后，就是这两句话怎么翻译？

谢谢！