By bending in the middle and using fast twitch muscle fibers, they can whip around without ever changing their net angular momentum.
透过在身体中断弯曲并使用快肌纤维,它们可以在不改变其净角动量的情况下摆动。
英语百科
Skeletal muscle
Skeletal muscle is one of three major muscle types, the others being cardiac muscle and smooth muscle. It is a form of striated muscle tissue which is under the voluntary control of the somatic nervous system. Most skeletal muscles are attached to bones by bundles of collagen fibers known as tendons.