carbon
/ˈkɑ:bən; `kɑrbən/ n
1 [U] non-metallic chemical element that is present in all living matter and occurs in its pure form as diamond and graphite 碳. =>App 10 见附录10.
2 [C] stick of carbon used in an electric arc lamp 炭精棒（用於电弧光灯）.
3 [C] = carbon paper.
4 [C] = carbon copy.