名词
中文翻译：最终的磨石
同义词：
['finalizer', 'final polisher']
例句：
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1.This is the final grinder I need to get my car ready for winter.
这是我需要的最后一台车磨石，让我的车准备好过冬。
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2. The final grinder was used to smooth the surface of the stone before it was polished.
最后一台磨石被用来打磨石头的表面，使其光滑。
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3. The final grinder was used to refine the metal before it was smelted.
最后一台磨石被用来精炼金属，然后进行熔炼。