And the common ones in glow in the dark toys are zinc sulfide and strontium aluminate.

而夜光玩具中常见的有硫化锌和铝酸。

But another thing that's cool about it is that, most strontium doesn't start out as strontium.

但另一件很酷的事情是，多数始并不是这种元素。

For one thing, there's more than one isotope — or form — of strontium.

一方面，的同位素或形式不止一种。

And then, the strontium you eat and drink gets incorporated into your teeth!

然后，你吃的和喝的会进入你的牙齿！

The enamel coating your teeth contains lots of calcium, and strontium is like calcium in a lot of ways.

牙齿上的牙釉质含有量钙，在很多方面都和钙非常类似。

It's not getting any more new calcium, so the strontium ratio is set forever.

它不再获得新的钙，因此的比例永远固定了。

Strontium aluminate is more expensive, but it has a longer persistence, which means it emits visible light more slowly, and glows longer after being energized.

铝酸价格较贵，但持久性较长，这意味着它见光的速度较慢，充电后光时间更长。

Your teeth hold a lot of information about your life story, and scientists are learning how to read it, thanks to the properties of strontium.

由于的特性，你的牙齿包含了很多关于你的生活故事的信息，科学家们正在研究如何阅读这些信息。

All you'd need to do is let me borrow a couple of teeth, so I could measure how much of the element strontium is in them.

你需要做的就是借我几颗牙齿，这样我就以测量它们中元素的含量。

Americans dutifully adopted the new term, but many British users disliked aluminum, pointing out that it disrupted the -ium pattern established by sodium, calcium, and strontium, so they added a vowel and syllable.

美国人则完完全全地接受了这个新术语，但很多英国使用者却不喜欢aluminum这个名字，指其破坏了由sodium, calcium, and strontium建立起的-ium的形式，因此他们在aluminum的基础上加了一个元音和一个音节。

For example, the strontium in the molars you got when you were around six will tell anthropologists where you lived for the first six or so years of your life.

例如，当你六岁左右时，你臼齿中的会告诉人类学家你在生命的前六年左右住在哪里。

So, when your body's making new teeth throughout your childhood, sometimes it'll incorporate strontium instead of calcium — and the strontium isotopes will show up in the same ratios that they had in the water that you drank.

因此，当你的身体在整个童年时期长新牙齿时，有时它会吸收而不是钙——同位素的含量与你喝的水中的钙的比例相同。