A pet mouse can run on an exercise wheel.

宠物鼠可以在滚轮上奔跑。

Everything is a wheel, turning and turning, never stopping.

世界就像一个大滚轮，永不停歇的转着。

And she said it was actually the scroll wheel on the mouse.

她说，其实就是鼠标上的滚轮。

We have the solid-state scroll wheel, right? Patent pending.

我们设计了这个固态的滚轮。正在申请专利。

And the rollers go all the way inside, so it's a nice smooth roll into the hearse.

滚轮一直滚到里面，所以很顺利地滚进灵车。

Several of these have been variations on Bhaskara's over-balanced wheel with rolling balls or weights on swinging arms.

有几个是基婆什伽罗超平衡滚轮衍生而来的在摆臂上装滚动的球或是有重量的东西。

So they built what looks like the skeleton of a wheeled suitcase, and then filmed it rolling on a treadmill.

因此，他们制造了一个看上去像滚轮行李箱框架的东西，然后拍摄它在跑步机上的运动。

So when you have six casket bearers, you can get nice and close before you put the casket on the rollers.

所以有六个人抬棺材时，灵柩被放在滚轮上之前可以很接近。

The roller bags are designed to fit into the overhead compartments.

滚轮包的设计适合头顶行李箱。

You can scroll using these, or you can scroll with your mouse using the roller.

您可以使用这些滚动，也可以使用滚轮用鼠标滚动。

There's one more type of barrier which uses rollers.

还有一种使用滚轮的护栏。

Each tube passes through pairs of rollers connected to a motor.

每根管子穿过一对与电机相的滚轮。

It's just an ice roller, got off of Amazon, and I live by it.

这只是一个冰滚轮，是从亚马逊上买的，我超爱用它。

This is the actual ice roller I used in the show.

这是我在节目中实际使用的冰滚轮。

My next step is a face roller.

我的下一步是面部滚轮。

And then I have my little handy-dandy face roller.

然后我有我的小得心应手的面部滚轮。

You can't scroll your way to good programming, right?

你不能通过滚轮滚动来成为好程序员，对吧？

It's a little more ergonomic with the horizontal wheel.

横向滚轮的设计让它的使用更加符合人体工学。

Come on. Who am I gonna use if not the Steamroller?

来吧, 如果不是蒸汽滚轮, 我还要用谁?

But how does the scroll wheel know which direction it's rotating?

但滚轮是如何知道它旋转的方向的？