1N-COUNT 克拉(钻石等宝石的重量单位,合0.2克) A carat is a unit for measuring the weight of diamonds and other precious stones. It is equal to 0.2 grams. 克拉(钻石等宝石的重量单位,合0.2克)
The gemstone is 28.6 millimetres high and weighs 139.43 carats.
这块宝石高28.6毫米,重139.43克拉。
...a huge eight-carat diamond.
重达8克拉的大钻石
2COMB in ADJ 开(表示黄金的纯度,纯金为24开)Carat is used after a number to indicate how pure gold is. The purest gold is 24-carat gold. 开(表示黄金的纯度,纯金为24开)