例如，- f开关通常用于告诉程序读取一个配置文件，这将因为该文件可能覆盖或者补充命令行上给出的选项而使处理变复杂。

For instance, the -f switch commonly used to tell a program to read a configuration file complicates the configuration because the file may override or supplement options given on the command line.

youdao

实际上，应用程序不用变就能删除、更新和创建。

In fact, the application works as-is for deletes, updates, and creates.

youdao

现在这个示例应用程序有一个大问题：虽然按钮的标签改变了，但是单击按钮时的动作没有变。

The sample application at this point has one big problem: even though the label of the button changes, the action that occurs when you click that button does not.

youdao

The beauty of this is, it keeps me from getting lazy, and not only testing my program and the thing that found the bug, but in all the things that used to work.

运行函数而不用再输入了，这其中的,美妙之处在于，它让我变的勤快了点,并不是仅仅的去测试程序发现bug方面，同样适用于那些正常工作的模块。

麻省理工公开课 - 计算机科学及编程导论课程节选