名词
中文翻译：Unknown
同义词：
['ruby', 'gemstone']
例句：
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1. The rongalite in the necklace is a rare and valuable gem.
项链中的红宝石是稀有且有价值的宝石。
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2. The rongalite mine is located in the heart of the mountain range.
红宝石矿位于山脉中心地带。
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3. The rongalite's deep red color makes it stand out against the white background.
红宝石深邃的红色使其在白色背景中脱颖而出。