Which of these dog breeds is believed to be the oldest? Afghan Hound, Alaskan Malamute, Border Collie or Chihuahua. Many scientists believe the Afghan Hound originated in Afghanistan in around 6.000 B.C. making it the oldest breed on this list.

下列哪个犬种被认为是最古老的?阿富汗猎犬、阿拉斯加雪橇犬、边境牧羊犬还是吉娃娃?许多科学家认为，阿富汗猎犬起源于大约公元前6000年的阿富汗，是上述名单上最古老的犬种。

There's widespread disagreement over what the oldest breed in the world is. Some scientists say it's the Akita Inu, the Basenji or the Chinese Saluki. And while the relationship between people and dogs is known to go back thousands of years, researchers don't know exactly when or why dogs became domesticated as man's best friend. But there are some new theories about this and a related study was just published in the "Proceedings of the National Academy of Sciences".

对于世界上最古老的犬种是什么，存在着广泛的分歧。一些科学家认为是秋田犬，巴仙吉犬或萨路基猎犬。人类和犬类之间的关系可追溯至几千年前，但研究人员尚不清楚犬类在何时或为何会被驯化成为人类最好的朋友。但关于这个问题有一些新的理论，一项相关研究刚刚发表在《美国国家科学院院刊》上。

What researchers did was compare genetic information gathered from ancient human remains with the info gathered from ancient dog remains. They say that some of the dogs found in the Americas have lineage that could be traced back to ancient Siberian dogs.

研究人员将从古代人类遗骸中收集到的基因信息与从古代狗遗骸中收集的信息进行比较。他们表示，在美洲发现的一些狗的血统可以追溯到古代西伯利亚狗。

So from that, they concluded that when people migrated from Northeast Asia to the Americas, the dogs came with them. Scientists believe this happened more than 15.000 years ago over the Bering Land Bridge which no longer exists. The study lead author theorized that the dogs could have helped the people carry their goods faster and she suggested that people and dogs might have gotten together in the first place when humans allowed wolves to eat whatever food people threw away.

因此，他们由此得出结论，当人们从东北亚迁徙到美洲时，狗狗也随之而来。科学家认为这发生在15000多年前的白令陆桥上，这座桥已经不复存在。这项研究的首席作者推论，狗可以帮助人们更快地搬运货物，她认为当人类允许狼吃人们扔掉的任何食物时，人和狗可能就联系在一起了。

There's no definitive proof of this but researchers are hoping the search for older dog bones in the region of Siberia to get more evidence. So I guess you could say that some scientific studies have gone to the dogs.

目前尚确切证据证明这一点，但研究人员希望在西伯利亚地区寻找更古老的狗骨头来获得更多证据。我想你可能会说，一些科学研究已经开始研究犬类了。