Large oily livers lend buoyancy to their streamlined bodies, and while trunk muscles of bony fishes attach directly to their skeletons, those of sharks also join to their skin.

在游动时更加节省能量，它们巨大的油质肝脏为流线型的身体提供浮力，与其它硬骨质的鱼类不同。

" By investigating the mechanics and physics behind trunk muscle movements, we can apply the physical mechanisms -- combinations of suction and grasping -- to find new ways to build robots, " Schulz said.

“通过研究躯干肌肉运动背后的力学和物理学，我们可以应用物理机制——吸力和抓握的结合——来找到制造机器人的新方法， ” 舒尔茨说。