VOA慢速英语 古足印让专家时光倒流

　　Scientists have also learned how Homo erectus walked from the prints. Researcher Matthew Bennett of Bournemouth University used laser technology to make digital images of the footprints. These images suggest that Homo erectus walked by touching the ground first with the back of the foot and pushing off with the front -- just as we do.

　　The researchers could even estimate the height of the ancient individuals. One was only about a meter tall. It is believed to have been a child. The others were about the average height of modern human adults.

　　VOICE ONE:

　　The findings provide more evidence that human ancestors were able to travel long distances. Homo erectus may have left Africa for other parts of the world as early as one million eight hundred years ago.

　　This is only the second time that early human footprints have been found. In nineteen seventy-eight, British anthropologist Mary Leaky discovered the prints of a possible human ancestor at Laetoli, Tanzania. They belonged to Australopithicus afarensis, a much earlier and smaller human-like creature that walked on two feet.

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