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I just want to make mention of this in case there's ever doubt, generally parentheses do solve your problem as an arithmetic but do realize this is some lower level details we'll come back to over time.
是想告诉大家如果你对某些式子的前后运算关系不确定，就加上括号,这都是一些小细节,我们以后还是会再提到的。
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You want to... you're not sure if you're going to read something that's related to literature, or to science,
你想要……你不确定是读点跟文学相关的还是读点跟科学相关的内容。
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All around. If you plug in the numbers, you will end up with an uncertainty 15% in the momentum as being on the order of 15%.
所有，如果你把数字都加起来，你将得到一个关于动量的不确定度,约为。
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There may be a little bit of uncertainty about that.
对于你能否进食还有个不确定因素
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You can laugh for things you are not so sure with.
你不确定的事情就可以一笑置之。
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Maybe you would just agree. I don't know.
或许你会赞成,我不确定
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But I'm not sure that you can really make that assumption based on something that someone creates
但我不确定你真的能基于某人创作的某些作品来做那样的推断，
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If you're stuck, if you're struggling, if you're not certain about something, please ask. We're not mind readers, we can't tell when you're struggling, other than sort of seeing the expression on your face, we need your help in identifying that.
如果你很差，如果你很纠结，如果你不确定某件事情，请问我们，我们不会读心术，我们没法儿看出来你们很纠结，除非能从你们的面部表情看出来，我们需要你们在这件事儿上的配合。
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So, I'm not sure I understand the question.
我不确定我是否明白了你的问题
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They've done some research. I'm not exactly sure if you can officially learn language from watching movies,
他们做了些研究。我不确定从官方的角度来讲，你是不是能够边看电影边学英语，
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you could leave your response to the invitation slightly open-ended by saying you're not sure.
你可以表示你不确定，开放性地回复这个邀请。
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And if you're not sure what to do, you can always go to club fairs,
如果你不确定该做什么，你可以一直去俱乐部的集会，
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To be honest, I'm not sure if you need to have gone to undergraduate
老实的说，我不确定你是否要有本科学历，
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either you don't quite know something or you are honestly not sure of something
你对某事不知情或是你对某事不确定
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But you're not sure what it is, you can't put your finger on it.
你不清楚那是什么，你不能确定。
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you're not sure which one in particular you're talking about.
你不确定哪个是你特别想谈的。
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So you will use "it depends on" in a sentence when you're not sure of something is going to happen.
当你不确定某件事是否会发生时，你就可以使用“It depends on”句型。
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Oh, I'm sorry. -I didn't like the ending.
你确定？，-是的，我非常不喜欢这个结局。
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When the uncertainty gets that big, you don't know which came first.
当不确定度到那么大的数值时，你不知道谁是第一个到达的。
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