人类所有的脆弱性是人性的一个基本事实。

Vulnerability is a basic fact of human nature.

youdao

汉语诗性既是一个基本事实，也是一个有待解释的概念。

The poetical nature of the Chinese language is a fact as well as a concept to be interpreted.

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但是这种观点忘记了一个基本事实，即《反杜林论》是一部论战性的著作。

But this view forget a basic fact that the "anti-Duhring," is a polemic of the book.

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One is something which I had mentioned before.

其中的一个基本事实我之前提到过

耶鲁公开课 - 心理学导论课程节选