Any system that stores objects has to be able to understand and project this notion of inheritance into the storage media and filter along it when retrieving data.

检索数据时，任何存储对象的系统都不得不将继承的概念引入它的存储媒介和过滤器中。

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Any system that stores objects has to be able to understand and project this notion of inheritance into the storage media and filter along it when retrieving data.

检索数据时，任何存储对象的系统都不得不将继承的概念引入它的存储媒介和过滤器中。

youdao