Countercharge is not only an important system of civil litigation, but an important theoretic issue of that also.

反诉是民事诉讼中的一项重要制度，也是民事诉讼理论中的一个重要问题。

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The countercharge, an important system in the civil action, is a basic litigious right the defendant has.

反诉是民事诉讼中一项重要的制度，它是被告所享有的民事诉权，也是一项基本诉讼权利。

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