noun 下载 🔗分享 床单被套 The cloth items used to make up a bed, such as sheets and pillowcases, formerly made of linen but now coming in a wide variety of material such as cotton or polyester. Examples : "My mom always washes the bedlinen every Saturday to keep our bedrooms fresh and clean. " 我妈妈总是每个星期六清洗床单被套, чтобы наши комнаты были свежими и чистыми. material item 与AI对话词汇游戏阅读练习