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TOEFL BNC: 3656 COCA: 5053

copper noun METAL

B2 [ U ] symbol Cu a chemical element that is a reddish-brown metal, used especially for making wire and coins

copper wire/pipes铜丝/管
a copper alloy铜合金

[ U ] the reddish-brown colour of the metal copper红棕色,紫铜色

The copper of Rosie's hair shone in the sunlight.罗茜的头发在阳光下闪着红褐色。

[ C usually plural ] UK informal a brown coin of low value铜板,铜币

I gave him a few coppers.我给了他几个铜板。

More examples

The downward drift in copper prices looks set to continue.

Brass is an alloy of copper and zinc.

Chemical analysis revealed a high content of copper.

They mine a lot of copper around these parts.

One of the properties of copper is that it conducts heat and electricity very well.

copper noun POLICE

[ C ] UK informal a police officer 警察

copper adjective ukus

of the reddish-brown colour of the metal copper红棕色的,紫铜色的


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