实验结果表明，人造触手能将一个物体包裹起来，其运动方式与真章鱼有着惊人的相似之处。

The result can wrap itself around an object with a movement that strikingly resembles that of the original.

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物体或物体系的总动能等于每种运动方式的动能之和，取决于质量和速度。

The total kinetic energy of a Body or system is equal to the sum of the kinetic energies resulting from each type of motion. The kinetic energy of an object depends on its mass and velocity.

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You simply want to describe things the way they are and then dynamics tells you how they changed and why they changed.

你只是单纯描述物体的实际状态,而动力学则是解释它们运动的方式和原因的

耶鲁公开课 - 基础物理课程节选