macos:The-always-on-env
出自UXGuide.net
请帮助我们修订和更新本文的中文部分
本文的中文部分虽然取自官方最新中文版本，但与英文原版相比已落后了一年多，可能无法反映英文版本中最近的修改，且文中笔误、前后译法矛盾、未翻译完全的片断较多，请您帮助一起修订完善。详情参见中文版修订完善计划。
随时就绪的特性
The Always-On Environment
As the center of the user’s digital hub, Mac OS X is designed to be always ready to use. Because of energy saving systems, it’s common for a user to leave a computer on most of the time. To allow for the fact that a computer may be on for hours, days, weeks, or even months at a time, you should consider the following guidelines:
做为用户的数字中心，Mac OS X被设计成时刻可用的计算机系统。因为节能系统的作用，用户离开而不关闭计算机的行为很普遍。为了处理计算机可能成天，成周甚至整月运行这一事实，您应该考虑如下准则：
- Avoid relying on a restart to get rid of cached or temporary files that may use up disk space. Be prepared to remove these files yourself when they are no longer needed.
- 避免依赖重启来清理可能占用磁盘空间的缓存或者临时文件。如果这些文件不再被使用，您应该自己删除它们。
- Avoid relying on startup or login items to initiate user-level processes. If the user quits a process initiated only at boot time, that process will be unavailable until the machine restarts.
- 避免依赖启动或者登录来初始化用户进程。如果用户强制退出了仅在启动时初始化的进程，则该进程直到重启前都不可用。
- Avoid requiring users to reboot as a part of an installation or software update unless absolutely necessary. Your application is probably not the only one they have open, so a restart can come as a rude interruption.
- 不要要求用户重启以进行安装或者软件更新，除非绝对有必要。用户可能打开了别的程序，所以重启对用户来说是一种粗暴的中断。
