问些关于骨骼动画方面的术语！！

MDog

bone space
在骨骼动画系统中，这个词何解啊？？
还有下面这几句话怎么翻译：
all bones start out in bone space with their joints coincident with the origin
A bone rotates about its pivot joint in bone space
The bone is offset to make room for its parent bone.

小弟这里谢谢了先 [em6]