carat (measure of the purity of gold)是什么意思，carat (measure of the purity of gold)的翻译，carat (measure of the purity of gold)音标、读音、用法和例句

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carat (measure of the purity of gold)是什么意思，carat (measure of the purity of gold)的翻译，carat (measure of the purity of gold)音标、读音、用法和例句_流逝汉英词典