作为程序员，很多挑战是要应付不断的更改：新的协议、应用程序编程接口(API)、客户需求、硬件约束等。

As a programmer, much of your challenge is to cope with unceasing change: new protocols, application programming interfaces (APIs), customer requirements, hardware constraints, and so on.

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换而言之，我们是否可以不让真正的程序员来做这些工作，而是让领域专家仅仅使用元编程工具来设计并构建全部应用程序呢？

In other words, can we skip the actual programmers to do the work, and let the domain experts simply use metaprogramming tools to design and build their entire applications?

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大多数程序员考虑编程时，他们都要设想用于编写应用程序的命令式样式和技术。

When most programmers think about programming, they imagine imperative styles and techniques for writing applications.

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