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二阶魔方如何工作的 – 译学馆
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二阶魔方如何工作的

How does a 2x2 Rubik's Cube work?

Four years ago I made a video about the inside of a Rubik’s Cube.
四年前 我做过一个关于魔方内部的视频
It was one of my very first YouTube animations.
那是我最早的YouTube动画之一
It was so much fun, that I wanna do it again,
妙趣横生 因此我想再做一次
but this time with the smaller version.
不过这次用的是较小版本的魔方
The mechanism here is a little different,
内部结构略有不同
so let’s check it out.
让我们来一探究竟
杰瑞德·欧文动画
When most people say Rubik’s Cube,
大多数人说起魔方
they’re probably talking about the 3×3 Rubik’s Cube.
很可能是在说三阶魔方
It’s the original and still the most popular cube today.
它是版本最早 也是当今依然最为流行的魔方
There are plenty of different variations.
魔方有很多变种
Let me show you a few of them.
我来展示其中几种
Here’s the Pyramid, the Megaminx,
这里是:金字塔魔方 五魔方
the Tower Cube, and the UFO.
223魔方 飞碟魔方
There’s also a lot of larger sizes of the cube,
还有很多规格更大的魔方
a 4×4, and a 5×5,
四阶魔方 五阶魔方
and smaller sizes, such as the 2×2.
也有更小的 比如二阶魔方
And, well, I thought about doing this video on the 1×1 Rubik’s Cube,
好吧 我想过用1×1魔方做这个视频
but the truth is I couldn’t quite get it open,
但真相是 我完全打不开它
and I’ve heard it’s really complex on the inside.
而且我听说它的内部特别复杂
So maybe we’ll save that for another video.
也许我们会把它留到另一个视频
For now, let’s focus on the 2×2 Rubik’s Cube.
现在 让我们来关注二阶魔方
This one is sometimes referred to as the Pocket Cube or Mini Cube.
有时它被称作口袋魔方或迷你魔方
If you can’t solve the regular size,
如果你对付不了常规尺寸
then I’m not sure you’ll have much luck here.
那对于它 我不确定你能否更走运
There are still 3.6 million possible positions the cube can be
它可以有三百六十万种位置变化
in compared to 43 quintillion.
与之相比 三阶魔方有四千三百万亿种变化
So yes, the numbers look a little better for the 2×2,
没错 看起来二阶相对容易
but it’s still gonna take some time to learn.
但仍然需要花些时间去学习
The 3×3 Cube has center pieces,
三阶魔方有中心块
edge pieces, and corner pieces.
楞块 角块
The 2×2 Cube only has corner pieces.
二阶魔方只有角块
There are eight of them.
总共八块
Here’s what it really looks like on the inside.
从内部看起来就是这样
The mechanism has changed over the years.
这些年来内部结构已经发生了改变
If you have an older 2×2 Cube,
如果你有一个老式二阶魔方
then it may look different than this.
那它看起来可能与这个不同
The center of the cube is a sphere
魔方的中心是一个球体
that is actually attached to one of the corner pieces.
实际上它附着于角块中的一个
The sphere has seven curved panels coming off of it,
球体周围有七块脱开的曲板
four on the top and three on the bottom.
顶部四块 底部三块
Of course, when I say top and bottom,
当然 我所说的顶部和底部
that can change depending on which way the cube is.
可以因魔方放置的角度而改变
Notice these gaps in between the curved panels.
注意这些曲板间的间隙
These are like the tracks that help guide the corner pieces
它们就像轨道一样 在边角方块旋转时
as they rotate.
起到帮助引导的作用
Let’s take a look at the corner pieces now.
现在让我们来看看角块
They each have three colors on them.
每一块都有三种颜色
The corner that’s attached here
这里附着的角
is just a regular cube shape that’s embedded into the sphere.
只是一个嵌入到球体中的立方体
The other seven corner pieces have some interesting geometry.
其它的七个角块是些有趣的几何体
Let’s take a look at one of them.
让我们看看其中一块
On the inside you’ll see three places where there’s plastic extending outwards.
在内侧 你可以看到三处塑料伸出的地方
This is what makes contact with the center sphere.
这里与中心球接触
This makes even more sense when you look at a few of the corner pieces put together.
几个角块放在一起看 会更容易理解
So what about the curved panels coming off the sphere?
那么球体周围脱开的曲板呢?
They slide right through the corner pieces.
它们从角块中间穿过
Then further inside here you’ll see
再往里看
that there’s only a handful of contact points for the back of the curved panel.
有少量跟曲板背面相接触的触点
This helps reduce the friction
这样设计有助于减少摩擦
so that the pieces can slide a lot easier.
令角块更顺畅地滑动
Let’s see how this looks with just one of the pieces moving around.
来看看当一个角块来回转动时是怎样的
Remember that this corner piece is attached to the core.
记住(画面左下方的)这个角块附着于球心
Whenever it rotates, the core will rotate as well.
当它旋转时 球心也会跟着旋转
If the attached corner is not being rotated,
如果附着的角块没有旋转
then the core doesn’t move.
球心就不会转动
At this point, you might be wondering
此时此刻 你可能正在疑惑
how do I take one of these 2×2 Cubes apart?
我是如何把二阶魔方拆开来的?
Well, if your cube has the same mechanism shown in this video,
如果你的魔方与视频中的这只结构相同
then it’s pretty difficult to take it apart without breaking it.
那么既要拆开它又不弄坏它 这可就太难了
You can try to pry off one of these pieces,
你可以试着撬开其中一块
but you’ll probably break it
不过可能会弄坏它
and sacrifice your cube in the process.
并在这个过程中损失掉魔方
But if you’re asking my opinion,
但要是你问我的看法
it was worth it just to make this video.
为制作这个视频 完全值得
My name’s Jared,
我叫Jared
and here’s a few other videos of mine that you might enjoy.
这儿有几个我的其他视频 你也许会喜欢
Thanks for watching, and I’ll see you next time.
谢谢观看 下期再见

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