co
同樣的
CO
n 1: an odorless very poisonous gas that is a product of
incomplete combustion of carbon [syn: carbon monoxide,
carbon monoxide gas]
2: a hard ferromagnetic silver-white bivalent or trivalent
metallic element; a trace element in plant and animal
nutrition [syn: cobalt, atomic number 27]
3: one who refuses to serve in the armed forces on grounds of
conscience [syn: conscientious objector]
4: a state in west central United States in the Rocky Mountains
[syn: Colorado, Centennial State]