The studies of Mongolian Holocene climate changes mainly focused on the records of tree-rings, eolian sediments and lacustrine sediments.
蒙古全新世气候变化研究侧重于对树轮、风成沉积和湖泊沉积物的研究。
The tree people in the Lord of the Rings—the Ents—can get around by walking.
《指环王》里的树形人，即树精，可以四处走动。
Replacement can be a marvelously precise process, so that details of shell ornamentation, tree rings in wood, and delicate structures in bone are accurately preserved.
替换可能是一个令人惊叹的精确过程，因此贝壳纹饰的细节，树木的年轮和骨的微妙结构都被准确地保存。
You can tell the age of a tree by counting its rings, but these records of trees' life really say a lot more.
你可以通过数年轮来判断树木的年龄，但是作为树木生命的记载，年轮能说明的东西远不止于此。
Ten thousand years of tree rings show that the carbon-14 level rises and falls about every 420 years.
一万年的树木年轮显示，碳14水平大约每420年上升和下降一次。
For the time before records began, we have only "proxy records" reconstructed largely from tree rings and ice cores, supplemented by a few incomplete written accounts.
在开始有记录之前，我们只有主要根据年轮和冰芯重建的“代理记录”，还有一些不完整的书面记录作为补充。
Bone growth in reptiles is periodic in nature, producing a series of concentric rings in the bone, not unlike the growth rings of a tree.
爬行动物的骨骼生长在本质上是周期性的，在骨头上产生一系列的同心圆，就像树木的年轮一样。
The ice cores pulled up at WAIS will be dated by counting back these seasonal layers as if they were tree rings.
所以，在这里挖出的冰核都能像树木年轮那样按季节数出年份来。
The oldest rings are those closest to the center of the tree.
年代最古老的年轮最靠近树心。
They then used local snowfall records to find the relationship between precipitation and the proportion of heavy oxygen in tree rings for the years covered by the weather records.
他们然后使用当地的降雪记录来寻找有气象记录的年代里降雪量和树木年轮中氧元素同位素的比率之间的关系。
But while the tree rings show variability, there is no data for why these climate changes occurred.
尽管树木年轮表明当时发生了气候剧变，却没有任何数据解释这次剧变的原因。
Estimates of earlier temperatures made from data such as ice cores and tree rings, though not as reliable as thermometers, suggest the decade may have been the warmest in the past millennium.
早期的气温数据是根据冰芯和树木年轮估算出来的，虽然不如温度计那么准确，但我们依然可看到，过去的十年是一千年来气温最高的十年。
We'd shared so much over the years, like rings on a tree.
我们这些年来分享得太多了，就像树的年轮一样。
They sit cross legged, in concentric circles... like growth rings in a tree.
他们交叉着腿坐成一个个同心圆…就像树上的年轮。
For parts of the past where there were no thermometers to consult, such studies use proxy data, such as tree rings.
在过去的一部分时间里，人们没有温度计测温，那些研究过程就使用具代表性的数据，比如树木的年轮来衡量。
You learn in grade school that each ring in a tree represents a year. But there's more information hidden away in these concentric rings.
我们在小学就已经了解到，树木的每圈年轮代表一年，不过这些同心圆还隐藏这更多的信息。
Isotopes of carbon in tree rings and beryllium in ice cores show a drop-off in solar radiation during much of the period.
树木年轮的碳同位素和冰核中钚同位素的检测都显示出在上述阶段的大多数时间内太阳辐射能量出现下降。
One of the pair, it was widely said, had turned out to be 200 years old, although I do not understand just how one determines such a fact: perhaps it is like counting the rings of a felled tree.
据许多人说，其中一种已经有200岁了，不过我不明白一个人怎么去确定这个事实：也许就像数那被砍下树木的年轮。
Tree rings are the obvious, and most controversial, example.
树的年轮是最明显但又最有争议性的一个例子。
To study tree rings, researchers generally take a pencil-sized core from a tree.
为了对年轮进行研究，研究人员通常会从树木取出一块铅笔大小的核心部分。
By counting tree rings in some of the logs, the team found the trees were at least 75 years old when they were entombed.
看一些木头的年轮，科研小组发现，那些树被掩埋的时候至少有75年的树龄。
So, by measuring the ratio of the two isotopes in the rings of trees, and matching the result to the age of the ring, a history of hurricanes spanning the life of the tree can be reconstructed.
因此，通过测量树的不同年轮(ring)中两种氧同位素的比例，并将结果比对年轮所显示的树龄，就可再现树木一生中所经历的所有飓风。
For earlier years, the two researchers relied on indirect data such as ice cores, tree rings and the growth patterns of corals that they culled from other people's papers.
至于1500年以前的资料，两位研究人员则利用了从他人论文中挑选出的间接数据，如：冰核、年轮、以及珊瑚的生长方式。
Nearby a chain saw paused as Cary Watkins, 40, owner of Cary's Tree Service, took the time to count 135 rings on a large oak.
现年40岁的Cary树木服务业主CaryWatkins把手中的电锯停下搁在一边，费了好些时间才数出一棵大橡树的135个年轮。
Dendro-climatologist a researcher who USES tree rings to study the climate record.
Dendro - climatologist -利用树木年轮来研究气候记录的研究学家。
By looking at tree rings, the sun's energy output can be evaluated back as far as.
根据对树木年轮的观测，可以推测太阳的能量输出，甚至回溯到万年前的数据。
By looking at tree rings, the sun's energy output can be evaluated back as far as 10, 000 years... read more.
根据对树木年轮的观测，可以推测太阳的能量输出，甚至回溯到万年前的数据。
All of which is a caution to those who read the Book of Tree Rings for clues to what happened in the past.
对于那些在年轮史书中寻找线索来了解过去发生了什么的人来说，所有这些都是一个警示。
They're a bit like tree rings, and you can count those ridges and it basically gives you the age of the animal.
他们有点像树的年轮，可以数那些条纹，基本上它会告诉你这个动物的年龄。
They're a bit like tree rings, and you can count those ridges and it basically gives you the age of the animal.
他们有点像树的年轮，可以数那些条纹，基本上它会告诉你这个动物的年龄。
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