Cobalt is a hard silvery-white metal which is used to harden steel and for producing a blue dye.
例句
...a country rich in copper, cobalt and diamonds.铜、钴和钻石资源丰富的国家
COLOUR
钴蓝色;深蓝色
Cobalt or cobalt blue is a deep blue colour.
例句
They walked past stalls selling huge sprays of crimson, saffron and cobalt flowers.他们经过很多卖花的摊位,摊位上摆着大把大把的鲜花,有深红色的,有金黄色的,还有深蓝色的。...a woman in a soft cobalt blue dress.穿着质地柔软的钴蓝色连衣裙的女人
英英词典释义
Noun
1. a hard ferromagnetic silver-white bivalent or trivalent metallic element; a trace element in plant and animal nutrition