| [/ˈkærət; ˋkærət/] n (abbr 缩写 ct) 用法:
1 unit of weight (200 milligrams) for precious stones 克拉（宝石重量单位, 等於200毫克）. 用法:
2 (US karat) unit of measurement of the purity of gold (pure gold being 24 carats) 开（黄金纯度单位, 纯金为24开）:
a 20-carat gold ring20开的金戒指 *
a ring of 20 carats 20开的戒指. |