One 2013 study of college students found that 80% of students use their phones or laptops during class, with the average student checking their digital device 11 times in a typical class.

2013年的一项关于大学生的研究发现，有80%的学生在课上使用手机或笔记本电脑，在一堂平常的课上，平均每个学生查看数码设备的次数高达11次。

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She encouraged the class not to stress or even study, promising that, "It is going to be a piece of cake".

她鼓励全班同学不要紧张，甚至不要复习，并承诺说：“考试将会很容易”。

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Here's a video of a Darden case study class.

这里有一个达登商学院案例研究课堂的视频。

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And many have. Yet now comes a study showing an increase in the number of injuries in "phys ed" class.

VOA: special.2009.08.06

So I'm not gonna give it a lot of time today because I'm gonna go to class now and study and then have lunch.

因此，我今天不会过多地谈论这一点,因为我还要上课,学习，然后吃午饭。

普林斯顿公开课 - 人性课程节选

and I did study like a prep class.

而且我参加了备考的培训班。

被学问的自由所迷住 - SpeakingMax英语口语达人

Yasufumi Takahashi, a trader in precious metals at Nissho Iwai, has enrolled in a class to study financial planning.

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Brazil offers a case study in the differences between a middle class created by the state and one that owes more to the private sector.

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In a recent study, middle- class Americans saved eight times more when they were given a 50 percent match.

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