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Except for one special situation, the <a href="/licenses/gpl.html">GNU General Public License</a> (GNU GPL) has no requirements about how much you can charge for distributing a copy of free software. You can charge nothing, a penny, a dollar, or a billion dollars. It's up to you, and the marketplace, so don't complain to us if nobody wants to pay a billion dollars for a copy. 
除了一个特例,<a href="/copyleft/gpl.html">GNU通用公共许可证</a>(GNU GPL)并未限制你可以从发行自由软件这项行为中收取多少费用。你可以不收费,你也可以只收一块钱、十块钱、甚至一百万。随便你!但是,这是市场经济,如果没有人愿意付一百万买你的版本,不要来怪我们。 
33 TODO: submitting -> contributing. 
Please see the <a href="/server/standards/README.translations.html">Translations README</a> for information on coordinating and contributing translations of this article. 
我们尽最大努力来提供精准和高质量的翻译,但难免会存在错误和不足。如果您在这方面有评论或一般性的建议,请发送至 <a href="">&lt;;</a>。</p><p>关于进行协调与提交翻译的更多信息参见 <a href="/server/standards/README.translations.html">《译者指南》</a>。