copper (noun)
铜是一种红褐色的金属，具有极好的导热性和导电性。
"The electrician installed new copper wiring in the kitchen."
Think of a 'COP' holding a 'PENNY' (which is copper). COP-PER. Also, remember 'Copper is for Cables' to link it to elect...
Using 'rust' to describe copper oxidation. → Using 'tarnish' or 'patina'.
Spelling copper as 'coper'. → Copper.
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