noun 下载 🔗分享 书皮,护封。 The detachable paper cover of a book; used to protect the binding, and to provide blurb. Examples : "I carefully slipped the book back into its dust jacket to protect it from getting damaged. " 我小心地把书放回书皮里,防止它被损坏。 literature material writing 与AI对话词汇游戏阅读练习