評(píng)論
打印
(San Francisco,AP)Prehistoric human hunters,using spears and fire, drove many large animals to extinction.
（美聯(lián)社舊金山電）史前時(shí)期的獵人使用矛與火獵捕許多大型動(dòng)物，迫使它們絕種。
About 13，000 years ago, large mammoths, huge antelope and very tall camels, populated North America.
大約在一萬三千年前，北美地區(qū)棲息許多體型巨大的長毛象、大羚羊與長得很高的駱駝。
All disappeared within a thousand years or so after the first Americans migrated from Asia.
第一批亞洲人遷徙到美洲之后，這些大型動(dòng)物大約在一千年之內(nèi)全數(shù)消失。
They had moved across a dry land bridge between the two continents.
這些亞洲人越過連接這兩塊大陸的干陸橋來到美洲。
