可能他只占了三分之一的课程，但是它却涵盖了我们几乎每天计算机编程工作大部分所用到的数学。
It's a bit heavyweight for a third-grader (maybe), but it does cover a lot of the math we use in "everyday" computer science and computer engineering.
它涵盖了二年级的主要科目，像阅读、语言艺术、拼写和数学。
It covers the core subjects for 2nd graders such as reading, language arts, spelling, and math.
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