在所有的软件和系统开发中都存在着通过语言、硬件、网络拓扑、通讯协议和底层架构等选择所带来的重要约束。
In all software and system development there are important constraints implied by the choice of languages, hardware, network topology, communications protocols and infrastructure, and so on.
默认情况下，假定处理程序将根据系统环境选择语言。
By default, the processor was supposed to select the language based on the system environment.
下一个屏幕如图19所示，会提示您选择系统上使用的其他语言。
The next screen, shown in Figure 19, prompts you to select additional languages to use on your system.
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