本质上，它的目的是包含信息。

___In ___essence, its purpose is to contain information.

本质上，无家可归意味着你没有家，因此你生活在街头。

___In ___essence, homelessness means that you don't have a home and because of this you are living on the streets.

这个理论本质上是一个更复杂模型的简化。

The theory is, ___in ___essence, a simplification of a more complex model.