public domain software

基本解释

Through the public interface exposed by this software, you can write custom rules to cover domain-specific problems and to enhance the overall coverage of the tool.
通过使用本款软件提供的公共界面，您就可以编写公共的规则以处理特定域的问题，并提高工具的作用领域。
I could support a law that would make GPL-covered software's source code available in the public domain after 5 years, provided it has the same effect on proprietary software's source code.
我可以赞同可以使带有通用公共许可证的软件的源代码在5年以后被公开的法律，假如这个法律对专有软件的源代码同样有效的话。