The materials from e-waste include iron, copper, gold, silver and aluminum.

电子垃圾中的材料包括铁、铜、金、银和铝。

youdao

The materials from e-waste include iron, copper, gold, silver, and aluminum materials that could be reused, resold, salvaged, or recycled.

电子垃圾中的材料包括铁、铜、金、银和铝，这些材料可以被重复利用、转售、废物利用或回收。

youdao

The TuanJie Mountain Copper-gold mine occurred in litmusless and acidic lava.

团结山金铜矿位于中性、酸性熔岩中。

youdao

Leadville had gold, silver and copper mines.

VOA: special.2010.03.08

The bronze medals are largely copper because burnished bronze and gold are similar in color, and the mint did not want any confusion as to which medal an athlete receives.

VOA: standard.2010.02.16

The rise outpaces 0.3% gains in gold and copper, and platinum was higher earlier in the day even when gold and copper were in negative territory.

FORBES: Platinum Outperforming Other Metals, Lifted By South African Supply Concerns

It is the largest producer of copper, gold and molybdenum in the world, satisfying 9% of the global demand for copper.

FORBES: Freeport McMoran Mines Major Cash Lode

Soros also cut stakes in miners such as Nova Gold and Kinross Gold while opening a small position in Freeport McMoran, which has exposure to both copper and gold. (Note: All valuations used here represent May 17 closing prices unless noted).

FORBES: Gold, Banks On The Agenda For Billionaires Soros, Paulson In Q1