Virtual reality creates 3-D, or three-dimensional experiences where objects have the three dimensions of length, width and height.

虚拟现实带来3D或者说是三维体验，即物体具有长度、宽度和高度这三个维度。

Basically, the idea is that the three dimensions of space, and a dimension of time, are joined together in a continuum called space-time.

总的来说，这个理论就是三维空间和一个时间维度，它们结合在一起形成一个连续的时空。

Gravity is generated by variations in the curvature of spacetime— the three dimensions of space plus time— which bend around any object that has mass.

引力是由时空曲率的变化产生的— —空间的三个维度加上时间— —它会围绕任何有质量的物体弯曲。

Our current understanding of the universe as it is exists through our perception of the three dimensions we exist in, length, width, and height, but we're actually able to get glimpses into the fourth dimension from time to time.

目前我们对宇宙的理解，它的存在超越了三维空间，由长度、宽度和高度三维构成的人类生存空间，但是我们实际上能够感受到有时我们进入了第四维空间。