简，对于我们的计算机课上所有的理论知识我都觉得有困难。
Jane, I am having difficulty with all the theoretic stuff we are getting in our computer course.
贵公司的产品很出色；但对于你们开的价码，我觉得有点困难。
Your products are very good. But I'm a little worried about the price you're asking.
贵公司的产品很出色；但对于你们开的价码，我觉得有点困难。
Your products are very good. But I'm a little worried about the price you're asking.
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