It means that the properties of the system, the properties that describe the system, don't change in time or in space.

它的意思是指，用以描述系统的性质，不随时间或空间改变。

麻省理工公开课 - 热力学与动力学课程节选

and what the relevance is of all this space time physics and all this, and how...

空间时间物理的相关性还有这全部，还有如何……

以爱因斯坦为榜样 - SpeakingMax英语口语达人

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

Parole is the unfolding in time of a set of possibilities given in space, that set of possibilities being what Saussure calls "langue."

个人语言是一系列以一定时间顺序排列的,语言的可能的组合，而语言则是一个特定群体共享的“

耶鲁公开课 - 文学理论导论课程节选

In dynamic programming, one of the things that's going on is we're trading time for space.

在动态编程法中我们是在用,空间换时间，除了动态编程法。

麻省理工公开课 - 计算机科学及编程导论课程节选

The point that I'd been emphasizing is well first point of course has been don't confuse the stages with the entire space-time worm.

我所强调的点是,第一个点当然是,别混淆了阶段,和整条时间虫。

耶鲁公开课 - 死亡课程节选

No one of us can get out of the space and time of life.

谁也不能逃脱生命的空间和时间。

普林斯顿公开课 - 人性课程节选

So what we would like to do is to describe what the object does by drawing a graph of time versus space and the graph would be something like this.

然后我们要做的就是描述这个物体的运动,通过画一个"x-t"图,画出来的图就像这样

耶鲁公开课 - 基础物理课程节选

Napoleon,if you think of it,Napoleon's a person extended through space and time.

这样，拿破仑是一个跨越时空的人。

耶鲁公开课 - 死亡课程节选

So I would help myself to this language of space-time worm object that extends not only over space but also over time, and distinguish the entire worm from the various slices or stages that either make up the worm or we could slice the worm into.

然后我借助时间虫这个词,这是描写物体,贯穿时间和空间的词语，并区分出整条虫,和不同的部分,这些部分是组成虫，或者虫可以切分成的。

耶鲁公开课 - 死亡课程节选

Or to put it in terms of stages, that person's got to be--that stage, that slice has to be part of the very same extended-through-time space-time worm as this stage is.

以阶段来说，那个人，那个阶段，那个部分,和这个阶段,有着同样的贯穿时间的,时间虫。

耶鲁公开课 - 死亡课程节选