As well as oil and food, metals prices have been soaring: the price of copper hit a series of record highs this week.

金属、油和食品价格一直飞涨：本周铜价创一系列历史最高。

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To examine the global impact of acidification, the researchers developed a series of world maps to show current coal use, nutrient consumption, and copper production and smelting by country.

为检验酸性化过程对全球的影响，研究者们描绘出一系列世界地图来展示近期煤炭利用、营养消费和铜矿生产、冶炼的国家。

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An annual output of more than 100 million locks beat, main products are: "doll" brand plating copper padlock series ball chrome, computer graphic billiard copper padlock series.

年产各类锁具100余万打，主要产品有：“娃娃”牌镀铬钢球铜挂锁系列，电脑平面弹子铜挂锁系列。

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In order that the foil does not fall apart, each transparent ring is actually a series of curved slots in the copper rather than a continuous gap.

ECONOMIST: The search for alien life

They want to provide a series of incentives to mine owners and firms which make gold as a by-product of smelting copper ore.

BBC: Golden opportunity for old Indian mines

On one long wall is a series of enormous, predominantly white paintings by Robert Ryman and Andy Warhol and a mirror-finished copper work by Donald Judd, like a polished jewel among them.

WSJ: New Guggenheim: Art and Architecture as One | By Ada Louise Huxtable