When in class, we ought to try all our best to answer the teachers' questions.
当在课堂上，我们应该尽我们最大的努力回答老师的问题。
When you have attributes in a class, you need to be able to initialize these attributes with some initial values.
当您在一个类中拥有一定的属性时，您应该能够利用一些初始值来初始化这些属性。
When the teacher left, two students who I often saw text in class started boasting about how they sent text messages and never got caught.
老师走后，两个经常在课堂上发短信的学生开始吹嘘自己是如何发短信，而且从来没有被抓到过。
My heart swelled with pride when I knew my class had won the first prize in the sports meeting.
当我知道我们班在运动会上得了一等奖时，我的心中充满了自豪。
Among the annoying challenges facing the middle class is one that will probably go unmentioned in the next presidential campaign: What happens when the robots come for their jobs?
中产阶级面临的恼人挑战之一是：当机器人要抢占他们的工作时，他们该怎么办？而这个问题在下届总统竞选中很可能被忽略。
When the work was completed, many moved to other construction jobs or to factory work in cities and towns, where they became part of an expanding working class.
工程完工后，许多人转到其他建筑工地或城镇的工厂工作，在那里他们成为不断扩大的工人阶级的一部分。
The actor still remembers the excitement in his class when a female classmate was chosen for a key role in a Zhang Yimou film.
这名演员还记得他班上的一位女同学被选中在张艺谋的电影中担当主角时的激动情形。
I am sure you all know from physics class about how light moves in microscopic ways and that we can only see light when the wavelength of that light is in a specific range.
我相信，你们在物理课上都学过光是如何以微观的方式运动的，以及只有在光的波长在特定的范围内时我们才能看到光这一事实。
When you're sitting in class, have you ever drawn pictures in the margins of your notebooks?
当你正在上课的时候，你有没有在笔记本的空白处画过画？
Gabriel was a student here in this class two years ago, when we came and presented on the program and he is currently a student in the MAPP program.
加布里尔两年前是这门课的学生，当时我们来做这个项目的演讲，现在他是MAPP 项目的学生。
It's a practical issue, like we can't have an instructor when there're only a few students in the class.
这是一个实际问题，就比如我们不能在班里仅仅有几个学生的情况下找到一个老师。
When I was in high school, dozens in my class alone would have answered differently.
我上高中的时候，光是我班上的几十个学生就会有不同的回答。
The class got up when the teacher came in.
老师进来时全班起立。
When taking a class in college, the author realized that a lot of information about Asian Americans was left out of the textbooks he studied.
在大学上课时，作者意识到许多关于亚裔美国人的知识都是他在课本上从未学到过的。
When we finish, ISS will be a premier, world-class laboratory in low Earth orbit.
当我们完成时，国际空间站将成为近地轨道上一流的世界级实验室。
In 2012, 125 students at Harvard were caught up in a scandal when it was discovered they had cheated on a take-home exam for a class entitled "Introduction To Congress".
2012年，哈佛大学有125名学生卷入了一场丑闻，在一门名为《国会概论》的在家考试中作弊。
I'm always a little nervous when I answer questions in class.
我在课堂上回答问题时总是有点紧张。
Do you put up your hand when you want to speak in class?
当你想在课堂上发言时，你会举手吗？
Sometimes Mum is not very happy with Matt because he plays so much and does not listen to his teachers carefully when he is in class.
有时妈妈对马特不太满意，因为他在课堂上玩得太多，不认真听老师讲课。
She always knows what's going on in class, even when her students are passing notes behind her back.
她总是知道课堂上正在发生的事情，甚至她的学生在其身后传纸条也能知道。
When I was in the eighth grade, my class was assigned to be friends with the second-grade kids.
当我上八年级的时候，我们班被分配和二年级的孩子做朋友。
When twelve-year-old John Wilson walked into his chemistry class on a rainy day in 1931, he had no way of knowing that his life was to change completely.
1931年的一个雨天，12岁的约翰·威尔逊走进他的化学教室，那会儿他完全不知道自己的生活将彻底改变。
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