And you can change technologies reasonably quickly as needed because the important design information is in an abstract model, not embedded in the code.

还可以根据需要相对较快地改变技术，因为重要的设计信息是一个抽象模型，没有嵌入到代码中。

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Such a design makes maintenance all but impossible, because whenever the view changes, you must change the model logic, and vice versa.

这样的设计使得维护几乎不可能实现，因为无论视图何时改变，您都必须改变模型逻辑，反之亦然。

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By running thousands of processors in parallel supercomputers not only help design weapons systems they also model climate change crack codes and help develop new and life-changing drugs.

通过并列运行成千上万个处理器，超级计算机不仅仅可以帮助设计武器系统，还可以模拟气候变化，破解密码，甚至帮助开发新的救命药。

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Similarly, by adjusting the parameters of the mathematical model, it is possible to change the design of the virtual car, trying out different gearboxes and gear ratios, or adjusting the suspension.

ECONOMIST: Car design

The fixed fee model works for design stages with easily defined goals that are unlikely to change, while parts with less clear objectives are better served via time and materials.

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