名词
中文翻译：Unknown
同义词：
['diamond', 'gemstone']
例句：
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1. The diamond necklace is the most expensive piece of jewelry in the store.
这条钻石项链是店里最贵的珠宝。
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2. She bought a diamond ring for her fiancé as a symbol of their love.
她为未婚夫买了一个钻石戒指，作为他们爱情的象征。
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3. Diamonds are known for their durability and brilliance.
钻石因其耐用性和光辉而闻名。