We move in all kinds of different ways, different directions, different speeds, rotations.

我们以各种不同方式，不同方向，不同速，旋转运动。

Poor posture, traumas, physical activity and strong rotation movements can cause herniation, where disc bulges out in one direction.

不良姿势、创、体力活动与强烈旋转运动均可导致椎间盘突出，即椎间盘从某一方向突出。

You know? It's like the official sport of this spinning ball.

你知道？ 这就像这个旋转球官方运动。

Instead they could skid, rotating not in their direction of travel.

相反，它们会打滑， 旋转方向与运动方向不符。

Eighteen Burmese spinning bells, traditionally played by monks, are a central part of another movement.

传统上僧侣演奏十八个缅甸旋转铃是另一项运动核心部分。

The revolving movement ceases after the early growth of each shoot.

旋转运动在每个芽早期生长后停止。

This kept it spinning around your body. The motion was like one used by Polynesian people in their native dance, the hula.

运动时，呼啦圈在身体周围旋转。这种运动和波利尼西亚人本土舞蹈——草裙舞类似。

Now, other definitions of a revolution do include the motion of an object rotating about its own axis.

现在，其他定义确实包括物体绕其自身轴旋转运动。

Scroll wheels commonly use either optical rotary  encoders or magnetic rotary position sensors in order to measure rotational motion.

滚轮通常使用光学旋转编码器或磁性旋转位置传感器来测量旋转运动。

In the case of objects that move without rotating, all of that kinetic energy goes into translational motion.

在物体不旋转运动情况下，所有这些 动能用于平移运动。

Next time, we’ll see how how the logic of rotational motion applies to another idea: momentum!

下一次，我们将看到旋转运动逻辑如何应用于另一个想法：动量！

They can point out their " revolving door" , the " rotating cabinets" , the " turning" clocks, the " spinning" exercise bike.

他们可以指定旋转门、旋转橱柜、旋转时钟、旋转运动自行车。

But when an object is ROTATING, some of its kinetic energy is also taking the form of Rotational Motion.

但是当物体旋转时，它一些动能 它采取旋转运动形式。

But the physics of rotational motion isn’t all that different from the physics of translational motion.

但是旋转运动物理学与平移运动物理学并没有什么不同。

Because, first, the moment of inertia affects rotational motion in the same way that mass affects translational motion.

它们以相同方式影响旋转运动 质量影响平移运动。

Torque essentially does the same thing, but for rotational motion.

扭矩基本上做同样事情， 但它特定于旋转运动。

But for rotational motion, we really want to know the object’s angle -- what we call theta.

但是对于旋转运动， 我们真想知道物体角——我们称之为 theta。

But rotational motion is also a thing -- and an important one.

但旋转运动也存在，而且很重要。

I want to make sure I take time to reverse my circle. Checking in with the elbows. I'm beginning to get the neck involved here.

我想花点时间来逆向旋转运动。加上肩部和颈部一起运动。

And many of the equations you use to describe rotational motion will look really familiar to you.

还有很多我们将用来描述方程 旋转运动听起来很熟悉。