It is an important problem that how to construct and use network media bulletin board system.

如何建设和利用好网络媒体论坛，是网络媒体论坛面临的重要课题。

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But how to construct and consummate, is actually a difficult problem before us.

但如何构建和完善，却是摆在我们面前的一道难题。

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But how to construct and consummate, is actually a difficult problem before us.

但如何构建和完善，却是摆在我们面前的一道难题。

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