be an item (of a couple) be involved in an established romantic or sexual relationship. informal
1997Independent 'It is fair to say they are an item but they are not engaged,' said one of Mr Brown's closest confidantes.
英语词组固定搭配大全包含15956条英汉双解词组，基本涵盖了全部常用英文词组、短语的翻译及用法，是英语学习的有利工具。