Abstract: This treatise uses TFA concept and its analytic method to discuss the differences and characteristics of the presupposition, entailment and affirmance.
文章运用TFA概念和分析方法，探讨预设、蕴含和断言之间
区别及运作特
。
乙酸（Trifluoroacetic Acid）；黄芪总黄酮Abstract: This treatise uses TFA concept and its analytic method to discuss the differences and characteristics of the presupposition, entailment and affirmance.
文章运用TFA概念和分析方法，探讨预设、蕴含和断言之间区别及运作特。
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