The analysis suggested that the two groups had each been isolated from other humans for about 30,000 years, and that Australian Aboriginals are descended from the first colonists of Australia.

分析显示这两个种族与其他人类种族彼此相互隔绝大约30000年之久，而澳洲土著人就是澳洲第一批殖民者的后裔。

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The analysis suggested that the two groups had each been isolated from other humans for about 30, 000 years, and that Australian Aboriginals are descended from the first colonists of Australia.

分析显示这两个种族与其他人类种族彼此相互隔绝大约30000年之久，而澳洲土著人就是澳洲第一批殖民者的后裔。

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IR Your table states that Australian aboriginals were enfranchised in 1967.

ECONOMIST: Letters