我用一段演示来开始今天的课，这段演示阐述了语言非常重要的两个事实。

I began this class with a demonstration that illustrates two very important facts about language.

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只需要简单地阐述出自己观点和支撑事实。

Simply state your view and the facts supporting it.

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只需要简单地阐述出自己观点和支撑事实。

Simply state your view and the facts supporting it.

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