提高时间空间的使用效率。

Make better use of your time and space.

youdao

很有可能空间和时间是有限的。

It is quite possible that space and time are finite.

《牛津词典》

这些文件已被压缩以占用更少的磁盘空间，这样它们需要更短的时间下载。

These files have been zipped up to take up less disk space so they take less time to download.

《柯林斯英汉双解大词典》

For the adult learner, the technology has the capability of freeing us in terms of time and space.

对成年学习者而言，技术能够让我们免受,时间和空间的限制。

麻省理工公开课 - 媒体、教育、市场课程节选

I'm asking about this thing that's extended obviously through space since car has taken up some space and through time.

我问的是这个贯穿,当然也贯穿空间,因为车子也占空间,还有贯穿时间的物体。

耶鲁公开课 - 死亡课程节选

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