在美国，这类讨论会作为矿业大会的主要内容已经有至少十年。
In America such sessions have been an industry staple for at least a decade, says Hans Matthews, who advises aboriginal groups on how to treat mining firms.
在美国，这类讨论会作为矿业大会的主要内容已经有至少十年。
In America such sessions have been an industry staple for at least a decade, says Hans Matthews, who advises aboriginal groups on how to treat mining firms.
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