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There are many kinds of work. There's electrical work, take the motor, you plug it into the wall, electricity makes the fan go around, that's electrical work. There's magnetic work.
我们复习一下大一,学过的功的概念：,物体在力的作用下，运动了一段距离。
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And we have this myth that if you go into more than 3 libraries in your freshman year, you will not graduate.
我们有这样一个传说，如果你在大一的时候去过三个以上的图书馆，那你就毕不了业。
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So if you've been thinking you're, like, the only senior here who's taking this course: not at all, there's about a hundred of you, there's about a hundred juniors, there's a couple hundred sophomores and about a couple hundred freshman.
如果你觉得你是这门课程中的，唯一的一个毕业班的学生：那你们错了，这里有大约一百个毕业班的学生，大约一百个大三的学生，一两百个大二的学生,还有大约一百个大一的新生。
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We know that there are some students here who don't have roommates but the majority of our first year students have roommates.
我知道，在这里的有些学生,还没有室友,但是大多数的大一新生,是有室友的。
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So the first thing about this is we're really reintroducing the experiments back into freshmen physics.
因此最重要的一点是,我们确实将实验重新引入,到大一新生的物理课上。
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Why do you take so many intense courses even though you're still a freshman at Berkeley?
在伯克利分校，你还是个大一新生，为什么要选那么多的课呢？
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So, in my freshmen year, there's like a science requirement that we have to take
所以，大一的时候，我们必须参加一个科学的课程，
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He'd been diagnosed with, if I recall correctly, cancer as a freshmen--and his doctor had told him that he pretty much had no chance of recovery and indeed had only a couple more years to live.
他大一的时候就被诊断出癌症，如果我没记错的话--他的医生告诉他,他基本上没有治愈的可能了,并且实际上只有几年时间存活了。
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and basically the advantage of taking them in your freshman year is
而且基本上大一修这些课的好处就是
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Mostly it's a lot of freshmen and then sometimes some sophomores.
大部分是大一新生，有时候有些大二的。
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It helped me in my mind sort of take that step that I was otherwise just a little too hesitant to take in my freshman year.
当初这让我下定决心,虽然当时我还有点犹豫不决,那是在我上大一的时候。
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Perhaps a mistake with some of the answers we got but one of our choice favorites was this one and it's actually fairly worth drawing one's attention to and that's this: I planned on taking the class as a freshman then convinced myself otherwise because I couldn't fit it into my workload.
得到的回答或许有的是错的,我们最喜欢的一个回答是这样的,值得我们注意一下：,我本打算大一就来上这节课,但却说服自己还是别去上了,因为我工作负荷满满的。
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It's very easy to get caught up in one's own studies here; and even I freshman year, dove into a world very much familiar to me-- a world that I did like but I just didn't realize that there were in fact worlds that I loved well beyond my domain of familiarity.
在这里，你们会很容易陷入封闭学习的误区;,我上大一的时候，学习的是自己熟悉的专业领域,我很喜欢那个专业但却没有意识到,我对其他领域的爱好,早已超过了我对本专业的爱好。
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Is it required for freshman?
这是大一新生的必修课吗？
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It's a freshman,
它是大一新生上的，
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