这一习俗可以追溯到几百年前。
其中一些可以追溯到200年前，反映了我们地区过去两个世纪的历史。
Some of them date back 200 years, which reflect the history of our area over the last two centuries.
另一些人指出，在遥远的北方建立的第一批气象站能追溯到50年前。
Others point out that the first weather stations in the far north date back just 50 years.
有些年轮可以追溯到近一万年前的冰河时代末期。
Some of the rings go back almost ten thousand years to the end of the Ice Age.
昨天，追溯到320万年前的原始人骨架重建“露西”首次亮相。
The early human skeleton reconstruction "Lucy" dating back 3.2 million years debuted yesterday.
这些滚轮包可以让你更方便地在机场拖着你的杂物，它的词源可以追溯到600多年前。
These roller bags that make it easier to lug your junk around airports are in keeping with etymology stretching back more than 600 years.
经纪业可以追溯到几百年前，但由于信息技术的发展，它现在正在迅速变更。
The brokerage goes back many hundreds of years, but it's in rapid change now because of information technology.
阿科马和霍皮可能是现存最古老的两个印第安人社区，它们都可以追溯到至少一千年前。
The Acoma and Hopi are probably the two oldest surviving Pueblo communities, both dating back at least a thousand years.
我们把法国南部和其他地方的洞穴壁画赞誉为杰作，它们的历史可以追溯到大概2万年前。
We hail as masterpieces the cave paintings in southern France and elsewhere, dating back some 20,000 years.
哈佛大学的一位人类学家提出，用火做饭可以追溯到近200万年前，这可以解释人类的一些特征，比如大脑大，牙齿小。
A Harvard anthropologist has proposed that using fire to cook food could be dated back to almost two million years and that it could explain hominid features like having a large brain and small teeth.
在中国，使用筷子的历史可以追溯到3000多年前的商朝。
The history of using chopsticks in China dates back to the Shang Dynasty, more than 3,000 years ago.
让人如此着迷的是，因为在发现安提基西拉机械之前，最早能像它一样追踪太阳和月亮的设备居然要追溯到1000多年前了。
What makes that so fascinating is that before we found the Antikythera Mechanism, the earliest device we had that could track the Sun and moon like this was invented over 1,000 years later.
事实上，这里有两个时期的降雨和湖泊形成：第一个始于大约37000年前；而第二个可以追溯到约一万年前。
There were actually two periods of rain and lake formation: the first one began about 37,000 years ago; and the second one dates from about 10,000 years ago.
根据某一实验室的推测，若干肖韦洞窟壁画可以追溯到三万年前，甚至更古远的年代。
A number of the Chauvet paintings have been dated by a lab to 30,000 or more years ago.
涂鸦、足球流氓和街头闹事都可追溯到几十年前。
Graffiti, soccer hooliganism, and street brawling all date back decades.
玻璃的起源可以追溯到公元前3500年，但直到2000年前的罗马帝国，吹制玻璃的艺术和玻璃的实际使用才变得更加广泛。
The origins of glass date back to 3,500 BC but it wasn't until the Roman Empire, 2,000 years ago, that the art of glass-blowing and the practical uses of glass became more widespread.
这个习俗可以追溯到1000多年前。
它的历史可以追溯到2000多年前。
目前，有可靠的科学证据表明，澳大利亚最早的岩石表面艺术创作可追溯到3万至5万年前。
Currently, reliable scientific evidence dates the earliest creation of art on rock surfaces in Australia to somewhere between 30,000 and 50,000 years ago.
而之前最早的示例是发现在非洲，仅仅能追溯到200，000年前。
Until now, the earliest examples found were in Africa, dating back only 200, 000 years.
而之前最早的示例是发现在非洲，仅仅能追溯到200,000年前。
Until now, the earliest examples found were in Africa, dating back only 200,000 years.
使用的方法要追溯到250年前，这个设备是在斯托克手工制作的，为公爵与公爵夫人制作在剑桥婚礼的官方纪念瓷器。
Using methods dating back 250 years, the set was handmade in Stoke-on-Trent by the same potteries responsible for the Duke and Duchess of Cambridge's official commemorative wedding China.
另一方面，书写似乎出现的时间更晚，关于象形文字书写系统最早的记录只能追溯到5000年前。
Writing, on the other hand, appeared to come much later, with the earliest records of a pictographic writing system dating back to just 5000 years ago.
不过，小脑扁桃体和中脑导水管周围灰质是大脑的两个古老原始的区域，可以追溯到亿万年前。
But the amygdala and the periaqueductal gray are ancient parts of the brain, dating back hundreds of millions of years.
缅甸最近的一次选举要追溯到20年前，这个军人统治的国度这些年来一直在消化该次大选的教训。
The junta ruling Myanmar has had 20 years to digest the lessons from the country's most recent election.
每一个汇编记录的数据都来自于数千个温度计(保存在气象站和船上)，并可以追溯到150年前。
Each one based on readings from thousands of thermometers, kept in weather stations and aboard ships, going back over 150 years.
“宠物和人们的健康息息相关的想法可以追溯到20年前或者更久远一些。”一位研究人类和宠物关系的心理学家June Mcnicholas博士说。
"The idea that pets and good health are associated goes back 20 years or more," says Dr June McNicholas, a psychologist who has researched the relationship between people and their pets.
这家公司可以追溯到300年前，现在已经提供了一份百万合约给gaga，让其成为某款茶的代言人。
The company, which dates back 300 years, has made GaGa a multi-million-pound offer to be the face of their specialist teas.
这种决策上的迟缓可以追溯到多年前。
我不知道目前有多长的记录。但是连地球的年龄至今都没有确切的结论，即便我们可以追溯到500年前的地震记录，它们是不是足以说明问题呢？
I don't know how long records have been kept, but even if we can go back 500 yrs is that enough time given how old the earth is to say with any certainty?
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