此界面显示了关于系统的部分信息，如磁盘上剩余可用空间和磁盘的总空间。

This interface shows some information about your system, such as the amount of free space left in the disk and the size of your disk.

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若envelope包含了错误的名称空间，会产生一个关于Envelope名称空间版本的错误。

If the Envelope contains the wrong namespace, an error will be generated regarding the version of Envelope namespace.

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关于名称空间的一些诀窍也许能够提供其他的选择(使用名称空间区分版本的有关技巧，请参阅参考资料)，但使用这些技巧也必须小心谨慎。

Some tricks with namespaces may give you other options (see Resources for a tip on using namespaces for versioning), but you should use even these with care.

youdao

You're going to see the arguments about space if you take some of the courses that follow on, and again, some nice courses about that. For this course, we're not going to worry about space that much. What we're really going to focus on is time.

在以后的其他课程上你们,会学到一些关于空间的参数,一些讲这个的,很不错的课程，但是在这门课上,我们并不太关心空间问题,我们真正关心的是时间问题。

麻省理工公开课 - 计算机科学及编程导论课程节选