建筑师在设计一个新的建筑之前首先要问，“它是用来作什么用的？怎么使用？”建筑物预定的作用通常觉定了它的构成和样式。
Before architects design any new building they first ask, "What will be its purpose? How will it be used?" the intended function always determines the form of the building.
建筑物预定的作用通常觉定了它的构成和样式。
The intended function always determines the form of the building.
它使用了方便的require函数，这个函数是被自动导入到当前的作用域中的(正如我们将在《第7章- Scala对象系统》的“预定义对象”章节所要讨论的)。
It USES the convenient require function that is imported automatically into the current scope (as we'll discuss in the section called "the Predef Object" in Chapter 7, the Scala Object System).
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