For example, it is difficult to test whether a program is making proper use of the filesystem without actually allowing it to read and write from the filesystem.
例如，实际上如果不允许一个程序从文件系统进行读和写，很难测试它是否正确使用了该文件系统。
At this point, the DLL will compile and link, so one could write a test program to use the Sample API and test it.
此时将编译和链接dll，因此可以编写测试程序来使用ExampleAPI并对其进行测试。
Write machine instructions, test, debug, and assemble program. Document overall system and develop data control procedures.
编写机器指令，测试、调试及集成程序。文件化整个系统及开发数据控制程序。
While writing a user space program to execute a system call is the "proper" way to do it, when you just want to test a system call module, it's annoying to have to write an additional program first.
当你想去测试一个系统调用模块时，编写一个用户空间的程序来执行一个系统调用是种“正规”的方法。但首先要编写额外的程序，这是恼人的事情。怎样才可以执行一个系统调用而又不用编写用户空间的程序呢？
Now, let's write a simple user space program to execute and test this new system call.
现在，让我们写些个简单的用户空间程序，运行和测试一个这个新的系统调用。
The interpreter can be used interactively, which makes it easy to experiment with features of the language, to write throw-away programs, or to test functions during bottom-up program development.
解释器可以交互式使用，这样就可以很方便的测试语言中的各种功能，以便于编写发布用的程序，或者进行自下而上的开发。
The interpreter can be used interactively, which makes it easy to experiment with features of the language, to write throw-away programs, or to test functions during bottom-up program development.
解释器可以交互式使用，这样就可以很方便的测试语言中的各种功能，以便于编写发布用的程序，或者进行自下而上的开发。
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