最终呈现的艺术品只是现有限制条件创造的一个结果。
Thee final art piece is the result of the constraints that we have.
根据过去的经验，大多数现有的ea框架都在一个或多个方面有限制。
According to past experience, most existing ea frameworks have limitations in one or more areas.
规则可以监管如何安全地专门化：每一新信息类型必须映射到现有的一种类型，而且新信息类型必须比它们所允许的内容中现成的更加有限制性。
Rules govern how to specialize safely: Each new information type must map to an existing one, and new information types must be more restrictive than the existing one in the content that they allow.
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