The research results show that too high copper content in the soil will do damage to Milk Vetch.

研究结果表明： 土壤含铜量过高，对紫云英造成危害；

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Growth improved from 2002 at 4% to 2003 at 5%, due largely to high copper prices and new gold production.

2003年GDP终于摆脱负增长，达到4%，2003年达到5%，这个成绩大部分应归于金属铜价格的高增长以及新的金属金色生产。

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However, its high copper content, make monel 400 can be rapidly attacked by nitric acid and ammonia systems.

然而，其含铜量高，使蒙乃尔400可迅速由硝酸和合成氨系统的攻击。

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Metals with a high copper content, like brass, can also be effective at neutralizing viruses.

WSJ: To Contagions, This Pen Is Deadlier Than the Sword

However, the benefit from high copper prices could be mitigated if manufacturers choose to substitute aluminum for copper to cut costs.

FORBES: Costly King Copper Could Turn Freeport Into A Pauper

One worthy question, however, is whether the current high copper prices sustainable.

FORBES: Grasberg's Copper Quality Could Cost Freeport A Few Pennies