我们需要使用射电望远镜，专门设计来接收这些波，然后，我们可以使用电脑根据我们接收到的信息来创建图片。

We need to use radio telescopes, specially designed to receive these waves and then, we can use computers to create pictures based on the information we receive.

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然而，如果对设计进行细心地管理，根据我们对步骤的定义，那些可能会被覆盖的步骤应该不会包含任何缺省的行为。

However, by carefully managing the design, we have defined the steps such that those likely to be overridden do not contain any actions for their default behavior.

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根据我们的经验，您通常最终会在项目过程中对数据模型设计迭代多次，然后才能得到想要的结果。

In our experience, you usually end up iterating over the data model design several times over the course of a project before you get it right.

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