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n.（宝石的重量单位）克拉，，（金子）开（以纯金为24开表示金含量的单位），=karat...
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She has a four-carat stone in her ring.她的戒指镶有一颗四克拉的宝石。Can you believe that he bought her a 5.3 - carat diamond ring?你知道吗,他买了一颗5.3克拉的钻石戒指给她?...a range of jewellery, plated with 22-carat nickel-free gold.一系列镀了一层22开无镍黄金的首饰S...
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an 18-carat gold ring18开的金戒指She has a four - carat stone in her ring.她的戒指镶有一颗四克拉的宝石.Can you believe that he bought her a 5.3 - carat diamond ring?你知道吗,他买了一颗5.3克拉的钻石戒指给她?...
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carat的复数形式为：carats...