I use the Category class to hold inventory information.

我使用Category类来保存库存信息。

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For this shopping cart, there is a hierarchical Category class and a simple Product class.

对于这个购物车来说，有一个层次Category类和一个简单的product类。

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It will also cause the Category class to have a "products" collection that enables developers to retrieve all products within that Category.

同样也是类别类拥有产品集合属性，通过这个属性可以得到此类别下所有产品。

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And again, if you're not in that category, talk to John or I after class, and we'll help you figure out where you might want to go.

再重申，如果你不是这样的学生，请课后来找我或者John谈谈，我们会帮你寻找,更好的去处。

麻省理工公开课 - 计算机科学及编程导论课程节选

If you've done a lot prior programming, this is probably not the best course for you, and if you're in that category, I would please encourage you to talk to John or I after class about what your goals are, what kind of experience you have, and how we might find you a course that better meets your goals.

如果你做过很多编程工作，这门课也许不适合你，如果你属于这一部分人的话，我会鼓励你下课以后找我,或者John谈谈你的目标何在，你有过什么经验，还有我们怎么才能给你,找到更适合你目标的课程。

麻省理工公开课 - 计算机科学及编程导论课程节选

Since 1979, when Sotheby's held the first auction specifically for this category, a class of collectors has led others into Latin art.

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However, more than half of those in the obese category were in class 1, and these individuals had no increased risk of dying compared to normal weight individuals.

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This year's event attracted 85 competitors, with nine skippers, including Gavignet, participating in the elite "ultimate class" category for yachts 18 meters and over.

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