teacher enters classroom records attendance using smart system

sftsrv style illustration: The teacher enters the classroom, where an intelligent attendance system automatically records the presence of all students. During the lesson, the teacher uses a smart blackboard to display vivid 3D images, helping students better understand scientific concepts.

老师走进教室，通过智能考勤系统自动记录了所有学生的出勤情况。上课时，老师用智能黑板展示了生动的三维图像，让同学们更好地理解了科学知识。