Bill Nye The Science Guy on Bones
ฝัง
- เผยแพร่เมื่อ 7 เม.ย. 2009
- Consider the Following, bones support all that is us. Our bodies' bones let us move, hold us up, and are always growing. They provide the pushing reaction forces balance and counter the pull of our muscles. For his fans, this is the episode with Bone Boy.