语义变化是隐喻在概念系统中跨范畴映射的结果，隐喻映射的来源是基本等级概念和意象图式。
Semantic change is the result of metaphorical mapping across conceptual domains. The sources of mapping are basic-level conception and image schemas.
我们的概念系统，也就是我们思维和行动的概念系统从本质上讲是隐喻性的。
Our ordinary conceptual system, in terms of which we both think and act, is fundamentally metaphorical in nature.
隐喻是构建概念系统的有效工具，为人们理解抽象的经济语篇提供了简洁、形象和生动的思维方式。
Metaphor is an effective tool of constructing conceptual systems, which provides a vivid concise way for our understanding of the abstract concepts of economy.
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