保护消费者免受劣质产品和误导性广告的侵害。
The protection of consumers form poor products or misleading claims.
在察看镜头前，务必了解镜头的基本特征，并且要彻底弄明白为什么你的套装镜头是劣质产品。
Before you look at lenses, it's important to understand the basic characteristics of lenses and be aware of why exactly your kit lens is an inferior product.
每个人所拥有的财富都是有限的，你可以选择买一大堆的劣质产品，也可以选择买少量的高质量产品。
Every person has a finite amount of money. Either you can buy lots of crappy stuff or you can buy a few very nice things.
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