名词
中文翻译：红宝石滚筒
同义词：
['ruby roller', 'rubbing machine']
例句：
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1.The ruby roller is a valuable tool for polishing precious stones.
红宝石滚筒是打磨珍贵宝石的宝贵工具。
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2.The ruby roller was used to smooth the surface of the diamond before it was set in the crown.
红宝石滚筒被用来在钻石镶嵌前平滑其表面。
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3. The ruby roller was designed to be easy to use and maintain, making it ideal for professional jewelers.
红宝石滚筒设计得易于使用和维护，使其成为专业珠宝商的理想选择。