为了解决这个争议，美国怀俄明大学的考古学家Todd Surovell及其同事对以上两种假说进行了检验。
To help resolve the debate, archaeologist Todd Surovell of the University of Wyoming, Laramie, and colleagues tested two assumptions.
为了解决这个争议，美国怀俄明大学的考古学家Todd Surovell及其同事对以上两种假说进行了检验。
To help resolve the debate, archaeologist Todd Surovell of the University of Wyoming, Laramie, and colleagues tested two assumptions.
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