化学试卷偏难，所以没有被采用。
The chemistry test paper he drafted is too difficult to adopt.
学生们对课程种类和强度基本满意，但认为有些课程内容偏难。
They were generally satisfied with course variety and course intensity, but they were less satisfied with course difficulty.
解起来是有点难，但考起来不会那么难,我还没出期末试卷，是有约束的偏导。
So, in general, solving might be difficult, but if it asks you to do it, then it means it shouldn't be too hard. I haven't written the final yet, is constrained partial derivatives.
解起来是有点难，但考起来不会那么难,我还没出期末试卷，是有约束的偏导。
So, in general, solving might be difficult, but if it asks you to do it, then it means it shouldn't be too hard. I haven't written the final yet, is constrained partial derivatives.
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