an expression which describes a person or object in a literary way by referring to something that is considered to have similar characteristics to the person or object you are trying to describe
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例句
1. Using metaphor, we say that computers have senses and a memory. 打个比方,我们可以说计算机有感觉和记忆力。 2. In poetry the rose is often a metaphor for love. 玫瑰在诗中通常作为爱的象征。