anchor.diff:    We create separate, environment-specific configuration files that build on `webpack.common`
     by merging into it the peculiarities particular to their target environments.
   
  -  `webpack.common.js`配置中做了大部分繁重的工作。
  +  `webpack.common.js`配置做了大部分繁重的工作。
     通过合并它们特有的配置，我们可以基于`webpack.common`为目标环境创建独立的、环境相关的配置文件。
   
     These files tend to be short and simple.
  
positive.code:   The `HtmlWebpackPlugin` (added in `webpack.common.js`) use the *publicPath* and the *filename* settings to generate
    appropriate &lt;script&gt; and &lt;link&gt; tags into the `index.html`.
  
    `HtmlWebpackPlugin`(添加自`webpack.common.js`)插件使用*`publicPath`*和*`filename`*设置，
    来向`index.html`中插入适当的&lt;script&gt;和&lt;link&gt;标签。
  
    Our CSS are buried inside our Javascript bundles by default. The `ExtractTextPlugin` extracts them into
  
negative.code:   It's an excellent alternative to the *SystemJS* approach we use throughout the documentation.
    In this guide we get a taste of Webpack and how to use it with Angular 2 applications.
  
    它是我们在文档中到处使用的*SystemJS*的一个优秀替代品。这篇指南会带我们尝尝Webpack的滋味，并学习如何在Angular 2程序中使用它。
  
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    ## Table of contents
  