The flaw in this theory lies in the lack of proof to support it.
这一理论的缺陷在于缺乏支持它的证据。
Section three: chapter three: theory and proof section, the key part of this article.
第三部分：第三章，属于理论实证篇，这部分是本文的重点。
Section three: chapter three: theory and proof section, the key part of this article.
第三部分：第三章，属于理论实证篇，这部分是本文的重点。
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