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You know that much about integrals.
你们应该懂很多积分的。
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We can convert them to integrals.
我们可以把它变成积分。
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I mean, you are doing single integrals.
我的意思是,做一元积分时。
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That we can turn the sums into integrals.
以至于我们可以把求和变成积分。
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So, line integrals we know how to evaluate.
我们知道如何计算线积分。