noun 下载 🔗分享 书套,封套。 The detachable paper cover of a book; used to protect the binding, and to provide blurb. Examples : "The bookstore clerk carefully slipped the brand new dustjacket onto the hardcover book. " 书店店员小心翼翼地把崭新的书套套在了那本精装书上。 literature writing item 与AI对话词汇游戏阅读练习