欢迎回到学校：课堂的第一堂课 Welcome Back to School: Classroom's First Lesson

色彩斑斓的教室场景，孩子们坐在色彩鲜艳的椅子上。老师站在白板旁边，上面写着“欢迎！”当相机放大时，它出现在屏幕上，突出了房间充满活力的氛围。

A colorful classroom scene with children seated on brightly colored chairs. The teacher stands next to a whiteboard as the word 'Welcome!' appears on it, while the camera zooms in, highlighting the vibrant atmosphere of the room.