Because of the realistic look of computer animation, an animator need to be aware of how far to push the motion. The motion should match the design of the character and the world.

因为计算机动画的写实视觉，一个动画师需要知道让运动到什么样的程度，该运动应该与角色的设计相匹配并与它所处的的世界相协调。

youdao

And when you put those three rules into a computer, as a guy called Craig Reynolds did, an animator now, he found that you get little particles moving just like flocks of birds, wonderful to watch.

当你把这三条规则输入一台计算机，那就会跟一个叫克雷格·雷诺兹的动画师那样发现，你的小粒子会像鸟儿一样成群移动，非常好看。

youdao