当前已有学习对象元数据的规范、内容包装规范等研究得相对成熟。

There are some mature standards studies about learning object meta-data, content packaging, ect.

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学习资源一般为组合资源，其逻辑结构符合学习对象元数据，内容包装等规范。

Learning resources logically organized by different types of digital resources should be matched with Learning Object Metadata and IMS Content Package standards.

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