在许多国家，法律规定没有特定许可证禁止公民持枪。
In many countries the law forbids citizens to carry guns without first having got a special permit.
使用专有的、封闭源代码的软件，您的主要赚钱计划将是卖许可证以及可能为特定客户做一些自定义的工作。
With proprietary, closed-source software, your primary moneymaking plan is to sell licenses, and possibly do some custom work for specific customers.
浮动(服务器)许可证可以在网上获得，并且不仅限于某一特定的工作站上。
Floating (server) licenses are accessible on a network and are not tied to one particular workstation.
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