左图所示，一位旅客乘船沿马托格罗索州的莫特斯河(或称死亡之河)前行。
At left, a visitor aboard a boat along the Rio das Mortes, or River of the Dead, in Mato Grosso.
1820年的热病摧毁了哥伦比亚河地区的人民，导致十分之八的人死亡。
In the 1820's fever devastated the people of the Columbia River area, killing eight out of ten of them.
1820年的热病摧毁了哥伦比亚河地区的人民，导致十分之八的人死亡。
In the 1820's fever devastated the people of the Columbia River area, killing eight out of ten of them.
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