但真实时间和真实空间内的界限在哪里呢？

But where are the limits in real time and real space?

youdao

但是RV确实空间有限。

But the RV does have limited space.

youdao

可以在这个坚实的图书馆和教学的讲台上刊载于看台，充实空间。

Within this solid podium are the library and teaching spaces accessed from the terraces and lit from above.

youdao

For the simplest context in which one can motivate a vector and also motivate the rules for dealing with vectors, is when you look at real space, the coordinates x and y.

对于最简单的情况,我们能用矢量,以及相关的规则来处理的,是实空间,x-y 坐标系

耶鲁公开课 - 基础物理课程节选