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vt.解释，详细讲解； 变形： 过去式：expounded过去分词：expounded现在分词：expounding第三人称单数：expounds 英英释义： expound[ ik'spaund ]v.add details, as to an account or idea; clarify the meaning of and discourse in a learned way, usually in writing同义词：elaboratelucubrateexpatiateexpositenl
