Secondly we briefly introduce distant education and answering system.

其次介绍了远程教育和远程教育中的答疑系统。

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At last, we give our system solution of distant education.

最后，我们提出了远程教育的系统解决方案。

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At last, we give our system solution of distant education.

最后，我们提出了远程教育的系统解决方案。

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