每个应用程序都可以是一个类库，即可以与其它应用分享它的代码。
Each application can be a library, i.e., share its code with others.
如果你使用Facebook，在你的Facebook新闻里使用Notes应用分享你的博客订阅。
If you are using Facebook, share your blog's feed in your Facebook news feed with the Notes application.
那些通过Google Docs应用分享功能，保存在你的GoogleDocs账户的图片也可以通过这种方式转化。
You can also convert pictures currently saved to your Google Docs account by sharing them with the Docs app.
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