专递课堂（Flipped Classroom）是指一种教学模式，其中学生在课堂之前通过观看教师制作的在线视频或其他学习材料来获得基础知识，然后在课堂上与教师和同学互动，进行更深入的讨论和学习活动。这种教学模式旨在提高学生的参与度和学习效果，同时也可以减轻教师的工作负担。

英文翻译：Flipped Classroom is a teaching model in which students acquire basic knowledge by watching online videos or other learning materials created by teachers before class, and then interact with teachers and classmates in the classroom for deeper discussion and learning activities．This teaching model aims to improve students' participation and learning effectiveness, while also reducing the workload of teachers.