名词
中文翻译：软磨石
同义词：
['soft abrasive', 'soft grinding material']
例句：
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1.The engineer used a soft grinding stone to smooth the surface of the metal.
工程师使用软磨石来平滑金属的表面。
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2. The soft grinding stone was essential for removing rust from the old car's body.
软磨石对于去除旧汽车车身的锈迹至关重要。
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3. The soft grinding stone was used to polish the glass window in the museum exhibit.
软磨石被用来抛光博物馆展览中的玻璃窗。