Metals like iron and copper are very useful.

像铁或铜之类的金属都是十分有用的。

youdao

An excess of zinc can interfere with absorption of other nutrients. including iron and copper.

摄入过量的锌会妨碍铁和铜等其他营养成分的吸收。

youdao

Iron and copper increase oxidative stress (free radical damage), which is a major problem in CFIDS.

增加铁和铜的氧化应激(自由基损伤)，这是一个重大问题在CFIDS。

youdao

The iron and copper helmet was probably used for ceremonies.

VOA: special.2010.08.04

The company's output of iron ore, as well as copper, zinc and nickel, surged in the last three months of 2009 because of strong demand from Chinese carmakers and construction companies.

VOA: standard.2010.01.21

And because of that increase in investment, its demand for things like iron and copper shot up and that created additional investment in countries like Peru, Australia and Brazil.

BBC: The year in business: 2012

Both the iron ore and copper industries have seen China importing more goods and stockpiling.

FORBES: First-Quarter Trade Deficit Highlights China's Delicate Balancing Act

The desperate search for upside earnings surprises even embraces mining properties covering coal, iron ore and copper.

FORBES: Let 'Em Beat Up On Banks