In makes an applied multi-level relation model to be basement of security database for following the BLP model.

为了适应BLP 模型，采用一种实用的多级 关系 模型作为安全数据库的基础，这是原有 关系 模型的扩展。

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This mechanism is called correspondence and allows MTF to traverse a whole model by applying all the correspondences reachable (directly or transitively) from the top-level relation.

这种机制称为通讯，它允许MTF通过把从顶级关联开始的所有通讯变为可到达的（直接或间接）横跨一个完整模型。

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He had seen her look this way before only in relation to her mother, but, at some level, he had always expected that she would one day direct this look at him.

他以前只在她提到自己的妈妈时看到过她这样。但在一定程度上，他知道早晚有一天，她也会这样看他。

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However, the Bank has somewhat reduced its medium-term forecast for consumer spending growth and says that it could turn out to be even lower because household debt has reached a record level in relation to income.

ECONOMIST: The economy

The bottom line: PE should be seen in relation to the level and the direction of interest rates rather than in relation to its historical level.

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But given the level marketing acitivity in relation marketing opportunity, one stereotype will surely not be dispelled: British understatement.

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