Our sensory organs are the basic cognitive apparatus that as a whole makes it possible for us to interact with the outside word. Among the five physical senses we have, taste is of unique significance to us.The analysis in this paper adopts a cognitive-semantic approach combined with a diachronic study of the semantic change of the words "sweet", "sour", "bitter", "salty" and "spicy" in English and Chinese in an attempt to work out a route of the semantic extension of major taste words in these two languages against an overall cognitive and cultural background.
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