anchor.diff:    which is an Angular [interpolation binding](guide/displaying-data.html) expression.
     At runtime, Angular replaces `{{name}}` with the value of the component's `name` property. 
     
  -  `template`属性定义了`<h1>`标题的一条消息。
  -  该消息以“Hello”开始，以 Angular [插值绑定](guide/displaying-data.html)表达式`{{name}}`结束。
  +  `template`属性定义了`<h1>`标题里的一条消息。
  +  该消息以 “Hello” 开始，以 Angular [插值绑定](guide/displaying-data.html)表达式`{{name}}`结束。
     在运行时，Angular 用组件的`name`属性值替换`{{name}}`。
     
     In the example, change the component class's `name` property from `'Angular'` to `'World'` and see what happens.
  
positive.code: :marked
    Angular applications are made of _components_.
    
    Angular应用是由*组件*组成的。
    
      A _component_ is the combination of an HTML template and a component class that controls a portion of the screen. Here is an example of a component that displays a simple string:
      
      *组件*由HTML模板和组件类组成，组件类控制视图。下面是一个显示简单字符串的组件:
  
  +makeExample('app/app.component.ts')(format='.')
  
  
negative.code:   You can try this out without installing anything. Open the <live-example>QuickStart example !{_on_Plunkr}</live-example> in another tab
    and follow along.
    
    无需任何安装就可以试试它。在另一个浏览器标签页打开并跟随<live-example> Plunker 上的《快速起步》例子</live-example>。
  
    Every component begins with an `@Component` [!{_decorator}](glossary.html#!{_decorator} '"!{_decorator}" explained')
    <span if-docs="ts">function</span> that
    <span if-docs="ts">takes a _metadata_ object. The metadata object</span> describes how the HTML template and component class work together.
    
    每个组件都以`@Component`[装饰器](glossary.html#!{_decorator} '"!{_decorator}" explained')<span if-docs="ts">函数</span>开始，它<span if-docs="ts">接受一个_元数据_对象参数。该元素对象</span>描述了 HTML 模板和组件类是如何一起工作的。
    
    The `selector` property tells Angular to display the component inside a custom `<my-app>` tag in the `index.html`.
    
    `selector`属性为 Angular 指定了在`index.html`中的自定义`<my-app>`标签里显示该组件。
    
  +makeExample('index.html','my-app','index.html (inside <body>)')(format='.')
  :marked
  