However because the basic format is simple and primitive, there is no way to encode semantics without building an extension.

不过因为它的基本标准格式是简单而原始的，想要在其中加入语义编码就必须为其格式建立一些扩展。

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The second scenario is a simple extension from the first, requiring the Policy Resolution mediation primitive to be informed of the operation in play.

第二种场景只是第一种的简单扩展，只需要告知 Policy Resolution 中介原语涉及的操作。

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Regulators treat these important products as though they pose uniquely worrisome risks, in spite of a long-standing consensus in the scientific community that the newer techniques are essentially an extension, or refinement, of more primitive ones.

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When computers were the province of corporate programmers and youthful tinkerers he saw their possibilities for illuminating the lives of all of us, seizing on the first gropings by Xerox researchers who developed a primitive mouse and graphical interface, and perceiving in a flash there the chance for an epochal extension of the capabilities of everyone.

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