Those who require their phones for some need must get their parents' and teachers' approval and must hand their phones over during class time.

那些因为某些需要得带手机的学生必须取得父母和老师的同意，并且必须在上课期间上交手机。

youdao

A quarter of students report that their use of digital devices during class causes their grades to suffer.

四分之一的学生报告说，在课上使用数码设备导致他们的成绩变差。

youdao

Surfing the Internet during class doesn't just steal focus from the educator; it also hurts students who're already struggling to grasp the material.

课上上网不仅会抢走老师的注意力，还会伤害到那些本来就对课堂内容理解困难的学生。

youdao

And: "A professor should not be annoyed with me if I receive an important call during class."

VOA: special.2009.03.12

So you should drop the homework before you come into class, rather than furiously work on it during class, and the solutions will be posted the same afternoon.

所以你应该在进教室之前交作业,而不是在上课的时候乱写一通,作业答案会在当天下午发布到网上

耶鲁公开课 - 基础物理课程节选

But in fact, it varies a lot from culture to culture, and we'll talk about that during the class.

但实际上,它在不同文化里的表现不尽相同,我们会在这门课里讨论

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

Two years ago, the Houston Independent School District began offering the SAT free during class time.

WSJ: SAT Scores Fall as More Students Take Exam

Giving 12-year-olds their own smartphones to use during class would seem to be a recipe for disaster.

FORBES: Connecting marketers to the Forbes audience. What is this?

Ironically, he does not allow his students to use laptops during class ("I need people to be present").

FORBES: Focus