corundum
英式发音 [kə'rʌndəm] 美式发音 [kə'rʌndəm]一般意思：
n.[矿]刚玉,金刚砂
完整意思：
a hard crystalline form of aluminum oxide, typically blue in color and used as a gemstone and abrasive.
词性：
名词
造句：
1. Rubies and sapphires are both varieties ofcorundum.
红宝石和蓝宝石都是刚玉的变种。
2. Corundum is one of the hardest minerals known to man.
刚玉是已知的最硬的矿物之一。
上一个：cottar
下一个：corolla
相关单词：
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