This painstaking technique animates models by moving them in tiny increments one frame at a time and photographing each frame individually.

这种细致的技术通过每次把模型移动一帧并且每帧分别拍照来形成模型动画。

So time is slower in that moving reference frame.

因此，在那个移动的参考系中时间变慢了。

Gamma always has to be greater than 1, because the velocity of the moving reference frame always has to be less than c, the speed of light.

Gamma 总是大于 1，因为参考系的移动速度总是小于 C，而且是光速。