From their take on music to a rock solid operating system, every product design choice Apple makes is governed by simplicity, ease of use and functionality.

从收入音乐到坚如磐石的操作系统，苹果公司对每个产品设计的选择都基于简单，易用和功能这三个标准。

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It also provided the architects with a system test perspective that they may not have considered and which, at times, resulted in product design changes.

它还向架构师提供他们没考虑过的系统测试的观点，而有时，这会导致产品设计的变更。

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Listed in sufficient detail to create a working system or product design.

清单罗列得够具体以便建立一个工作系统或是产品设计。

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Product design is focused almost entirely on user experience when the system is assumed to be working properly.

FORBES: Website Failures Are Inevitable, But They Need Not Be Ugly

Though it is more a product of tradition than design, it has turned into an efficient system for consolidating the power of the pope and the Church's other elites, he says.

NPR: Arcane Process Encourages Papal Horse Trading

Amazon spokeswoman Patty Smith said the price differences on certain DVDs are the result of tests that the company performs to re-evaluate various aspects of its Web site, such as the navigation system, what the home page looks like, overall site design and product pricing.

CNN: Testing reveals varied DVD prices on Amazon