cobalt

1. N-UNCOUNT Cobalt is a hard, silvery-white metal which is used to harden steel and for producing a blue dye. 鈷

...a country rich in copper, cobalt, and diamonds. ...一個(gè)銅、鈷和鉆石資源豐富的國(guó)家。

2. COLOR Cobalt or cobalt blue is a deep blue colour. 鈷藍(lán)色

...a woman in a soft cobalt blue dress. ...一個(gè)穿著質(zhì)地柔軟的鈷藍(lán)色連衣裙的女人。