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原来他是在要我们遇到问题的数学习题的号码。
He was asking which number math problem I needed help with.
youdao
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通过练习这些习题可以对问题的本质有更深刻的理解。
Working through these problems is crucial to understanding the material deeply.
youdao
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通过练习这些习题可以对问题的本质有更深刻的理解。
Working through these problems is crucial to understanding the material deeply.
youdao