The OED says "couch potato" originated as American slang, meaning "a person who spends leisure time passively or idly sitting around, especially watching television or video tapes."

《牛津英语大词典》对这个词是如此解释的：“couch potato”起源于美国俚语，代指那些“消极度过闲暇时光或终日无所事事的人，他们通常看电视或影碟打发时间”。

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The OED says "couch potato" originated as American slang, meaning "a pennon who spends leisure –time passively or idly sitting around, especially watching television or video tapes" .

牛津英语字典解释“沙发土豆”起源于一美国俚语，表示“一位身着燕尾服的人消极地或懒散地坐着度过悠闲的时光，主要是看电视或录像带”。

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