A pronoun must refer to one and only one antecedent to avoid vagueness or ambiguity.

代名词必须有一个，也只能有一个先行词，以免造成模糊或模棱两可。

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This paper concerns the three main nonlinlinguistic factors of ambiguity -cognitive ability, cultural differences and pragmatic vagueness, especially the cognitive model of metaphor and polysemy.

从人的认知能力、文化差异和语用模糊三方面探讨了歧义产生的主要非语言性因素，着重研究了人类对于隐喻含意和一词多义现象的认知模式。

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In the hope of having a clear definition of vagueness, the author first tries to tell the difference between three confusing concepts — vagueness, ambiguity, and generality.

作者盼望给出含糊语言一个清楚的界说，先鉴别了三个易殽杂的看法——含糊性、歧义性及概括性。

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