This textbook is very detailed and it may be-- I've had some reaction by students-- more than you wanted to know.

这本教材编写得非常详细,也许会,我听到过许多学生的反馈,涵盖面实在是太广了

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Because I think it's always good to have a lot of feedback from students to see what's working,

因为我觉得有很多学生的反馈是好的，可以判定什么是可行的，

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