But what once seemed to be an immutable axiom of burgernomics is true no longer.

但是过去一直被认为是的汉堡经济原不再一定正确了。

To refuel the car is a very similar experience to a petrol car.

加氢气和加油的原是一样的。

Okay, so to show that, they've turned three-dimensional space into two dimensions which turns a Wormhole into two dimensions, a circle.

所以为了展现这个原，他把三换成二，于是虫洞在二就成了 圆。

Sort of like how coolant in your car carries heat away from its engine.

这个工作原就如同你车里将热量运出引擎的冷却剂。

And this is how it works.

而下面是它运作的原。

And this is how we generate shapes.

这就是我们创造形状的原。

In fact, “use it or lose it, ” is a principle that applies to much of biology – not just brains.

事实上，“使用它否则就失去它，”是适用于许多生物的原——不只是大脑。

So, what's the rationale behind this belief?

那么，这种信念背后的基本原是什么呢？

I want to talk about the rationale behind what I decided to do.

我想谈谈我这么做的原。

Oh, I didn't know that. What's the principle behind it?

我不知道这个。背后的原是什么？

Whether it's an immune cell going off to battle infection, or a cancer cell making its way to a newarea of the body, the underlying mechanism for its movement is the same.

无论是冲锋陷阵抵御感染的免疫细胞，还是在迁移的癌细胞，它们运动的基本原是相同的。

Reason? Patient demand. Few, though, can adequately explain how acupuncture works.

为什么针刺疗法在美国会越来越受欢迎？原因就在于患者的需求。然而，很少有人能充分解释针灸的原。

Yeah I like how she cultivates scientific engagement by providing a host of Do It Yourself experiments that bring the same foundational principles of classical physics that govern everything from the solar system to your kitchen table.

是的，我喜欢她通过提供一系列" 自己动手做" 的实验来培养读者的科学参与性。这些实验会介绍从控制太阳系到餐桌的相同的经典物基本原。

In some cases, those principles might indeed redound to everyone's benefit.

在某些情况下，这些原或许的确有助于每一个人的福利。

The new product operates on the same rules that govern magnetism.

这款新产品依据磁性原来工作。

All about him were the smell of steam and soot and fire, the noise, of box-cars, engines, boilers, the mysterious workings of pistons, valves, levers, gears.

他周围有蒸汽、煤烟和火的气味，车厢、引擎和锅炉的噪音，活塞、阀门、杠杆和齿轮神秘的工作原。

This type of play — especially with building blocks — helps children discover and develop key principles in math and geometry.

这种类型的游戏——特别是搭积木——有助于儿童了解和掌握数学和几何学的关键原。

He says he doesn't understand the rationale here.

他说，他不太明白这一事件的根本原。

It's not cheating. It's the science of how information spreads.

这并非投机，而是信息传播原。

They cost 90 euros per person and you'll be shown the huge telescopes and have a talk from an expert, who'll explain all about how they work.

每人90欧元，大家可以去看大型望远镜，和专家交谈，他会解释工作的原。