Even before you get around to processing such annotations at the semantic level, you can use them in documentation tasks.
即使在准备从语义层面上处理这类注释之前，也可以在文档任务中加以利用。
Under interpretation 2, instead, the ontology, that underlies a knowledge base, is expressed in terms of suitable formal structures at the semantic level.
而定义2则认为有知识库支持的本体在语义层根据适当形式的结构予以表示。
Due to the rapid increase in the amount of available video data, there has been a growing demand for efficient methods to understand and manage the data at the semantic level.
随着可获得视频数据的快速增长，迫切需要有效的方法在语义层理解和管理视频数据。
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