因为应用程序不必担心程序的主体，它们可以更加关注可用性、易用性、背景及语义。
Because these applications do not necessarily need to worry about the backbone, they can focus more on usability, ease of use, context and semantics.
表结构为主体级内容提供表示语义。
The table structure provides presentational semantics for body-level content.
称赞语语义层面的积极性和肯定性表现出主体对客体所做的正面肯定性的评价。
The positivity and affirmation of the semantic level of complimentary expressions demonstrate the obverse and affirmative appraisal of the object by the subject.
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