sindexslipcase./slip-keys/US // ˈslɪpˌkeɪs //UK // (ˈslɪpˌkeɪs) //皮套,滑套,皮箱,滑盖Definitionsn.noun · 名词1.›a box for a book or set of books, open on one side so that the spine is visible.Level 4More words in s →