From RUNBOOM.COM
Scope(作用域) 是应用在 HTML (视图) 和 JavaScript (控制器)之间的纽带。
Scope 是一个对象，有可用的方法和属性。
Scope 可应用在视图和控制器上。
While, how many scopes can we have? is there any structure in it? I got those question when I come to it.
After a tough time reading, I think I have mixed up it with scope in java or python or whatever.
To be simple, it is a way to pass values from controllers to view(HTML), and nothing with structure.
I have to admit that here is a simple structure from root scope to scope, while, here, we'd better ignore it as it has no contribution to our understanding of scope in Angularjs.
