然后它提供一个视图模型为数据添加结构，因此能够聚合数据得出有用的含义。

It then provides a view model to add structure to the data so it can be aggregated to provide useful meaning.

youdao

你可以定义你自己的视图模型以添加行为，但你并不需要。

You can define a view model yourself to add customized behavior but you don't need to.

youdao

现在，您可以使用更多Rails特性来添加更多模型、控制器和视图。

From here, you can use more Rails features to add more models, controllers, and views.

youdao