This light blue section is data from tree ring observations.

浅蓝色部分是树木观测数据。

Fry then decided to count the tree's rings to learn its age.

然后弗莱决定数树来了解它龄。

There they form regular white bands amid the sediments, much like age rings in trees.

它们在沉积物中形成规则白色带，很像树木。

Researchers often look at chemicals stored in them when trying to reconstruct past environments.

在试图重现过去环境时，研究人员经常会从中所含化学物质入手。

We can't read the rings to know how old these aspens are.

我们无法通过读取来得知这些颤杨龄。

Thin rings show years when there wasn't.

而这些细则显示水分不足。

Scientists can then read these records, similar to reading the rings on a tree.

然后，科学家就可以读取这些记录，就像读取树一样。

Around the Haversian canals, there are concentric lamellae, which look a bit like tree rings.

在哈弗斯管周围有许多同心薄片，起来有点像树。

Tree rings can show age and give information about the environment over time.

树木可以显示树龄，并提供随时间变化环境信息。

We see it in the tree rings of the ancient redwoods.

我们可以在古老红杉树到火。

We know this because shark vertebrae show rings of their growth, just like tree rings.

我们知道这一点，是根据鲨鱼脊椎骨显示出它们生长环，就像树木一样。

Counting the rings of a single trunk will only account for up to 200 years or so, as Pando is in a constant cycle of growth, death, and renewal.

计算单一树干只能算到 200 左右；而同时，潘多处在生长、死亡，和更新持续循环中。

By looking at nitrogen in individual tree rings—those yearly layers you can see if you cut a tree in half — the researchers were able to show how important salmon are to the trees.

如果把一棵树砍成两半，你可以到，研究每棵树中氮含量，研究人员就能证明鲑鱼对树有多重要。

It's a bit like looking at tree rings, each layer tells a different a story and a different history about what the climate and the environment was doing at the time.

这有点像树，每一层都讲述了一个不同故事和一段关于当时气候和环境变化不同历史。

The Celts, who lived in what is now Ireland, Scotland, the UK, and parts of Northern Europe, based their calendar on the wheel of a year.

凯尔特人生活在现在爱尔兰、苏格兰、英国和北欧部分地区，他们日历是一个。

As teeth form, they accumulate microscopic layers of enamel -- like how trees add new growth rings -- and periods of high stress, including trauma, are recorded by disruptions in the layers.

牙齿形成时会累积一层层釉质，就像树木增加；而压力大时期，包括受到创伤，则会造成釉质层中断而留下纪录。

" They were hoping to get some mud, which they could use to date how the environment had changed over millions of years – like the rings on a tree, " says Griffiths.

“他们希望得到一些泥浆，他们可以用它们来确定环境在数百万里是如何变化，就像树木一样。”

When taken up by trees, it left a lasting signature in tree rings—giving the scientists a key to pinpoint the year 993 in the three wood samples using radiocarbon dating.

被树木接受后，放射性碳会在留下持久特征，而这给了科学家们一把密匙，使其利用放射性碳定法确定三份树木样本份是993。

Look inside one and you'll see that they're composed of tubes inside of tubes, so that a cross-section of an osteon looks like the rings of a tree trunk.

里面，你会到它们是由管子里管子组成，所以骨头横截面起来像树干。

When the tree is cut down, you can see a series of rings in the wood extending from the centre of the trunk to the bark.

当我们把橡木砍倒在地时候就能见从树干中心向树皮扩散许多。