Now, the main techniques are also devised by methods based on keyword match and used semantic, the techniques are pressed for information about expression of relation between concepts.

目前常用的反馈技术依然是基于关键词匹配的方式，基于语义的方式缺少概念之间关系的描述。

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This is the first time that this example is using a relation as a declarative statement to define an expression (in other words, a value assignment) instead of using it for model-to-model mapping.

这是本例子第一次把关联作为一个定义表达式(换句话说，一个赋值语句)的声明性陈述来使用，而不是用它作模型到模型的映射。

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A central mechanism establishing the relation between shear stress and atherosclerosis is the control of gene expression by wall shear stress.

建立剪切应力和动脉粥样硬化之间关系的主要机制是血管壁剪切应力基因表达的控制机制。

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