指定项目中每个文件的属性是一项繁重的任务。
Specifying the properties for each file in a project is a burdensome task.
如你所见，使用JDK Cipher是一项相当繁重的任务。
As you can see, working with JDK Ciphers is quite a cumbersome task.
这些框架替您完成了繁重的任务，所以您可以采用更高级的方式进行Ajax开发。
These frameworks do the heavy lifting for you, so that you can take a more high-level approach to Ajax development.
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