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。
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PolicyResolution中介原语涉及的操作。
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PolicyResolution中介原语涉及的操作。
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