Both the physical and biological containment systems are divided into different levels.
物理和生物遏制分为不同的水平。
We have already known that the people's needs can be divided into three different levels rising in turn.
我们已经知道，人们的需要可以分为三个依次上升的层次。
According to the different levels and applications, ontology is divided into meta-ontology of vehicle insurance, domain ontology of vehicle insurance and application ontology of vehicle insurance.
根据层次和应用的不同，分为车辆保险元本体，车辆保险领域本体和车辆保险应用本体。
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