With advances in ancient DNA technology, we can actually now start to begin to sequence the genomes of those other extinct mammoth forms that I mentioned, and I just wanted to talk about two of them, the woolly and the Columbian mammoth, both of which were living very close to each other so when the glaciers were massive in North America, the woollies were pushed into these subglacial ecotones, and came into contact with the relatives living to the south,
在研究古代DNA技术的帮助下 我们现在已经能开始重组 其他灭绝了的猛犸物种的基因 我在这里就提两种 长毛猛犸和哥伦比亚猛犸 在冰川时期 两种生活得非常近 当北美的冰川还是很庞大的时候 长毛猛犸就被推进冰川下的过渡带 来到南边，接触到了其他种族