Among other things, exposure in an application development language of a "system service" makes portability easier, for the operating system simply vanishes from view.
另外，“系统服务”在应用程序开发语言中的出现使可移植性变得更为容易，因为操作系统从视野中消失。
Over the years, software engineers have learned a lot about portability, and much of that knowledge has filtered into language design and standard coding practices.
多年以来，软件工程师已经学习了很多有关可移植性的问题，其中的很多知识已经渗透到了语言的设计以及标准编码实践当中。
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