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450%

450%

450%

450%

1

Demand for these metals by developing Asian countries has driven up the costs by 300 to 450 percent since 2003.

这些金属材料在亚洲发展中国家的不断需求使得它们的价格从 2003年以来涨了 300%至 450%。

2

Over just two months last summer , prices on cerium jumped more than 450 percent.

去年夏天刚刚过了二个月，铈的价格涨了 450%。

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