短语词组短语a book -shelf 书架book -shelf 书架Five -Foot Book-Shelf 五英尺书架SPARE BOOK SHELF 备用书架Book on the shelf 书放在书架上LAPA Book shelf 巴西树脂书架模型LeapFrog Tag Book Shelf 超越标记书架automated book shelf 自动文件柜book shelf with chest 书柜 返回 book shelf