名词
中文翻译：粗磨机
同义词：
['roughstone', 'rough stone']
例句：
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1.The rough mill was used to grind the grain into flour.
粗糙的磨机被用来把谷物磨成面粉。
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2. The rough mill is a common sight in rural areas.
粗糙的磨机是农村常见的景象。
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3.The rough mill was built by hand and has been in use for many years.
粗糙的磨机是由手工建造的，已经使用了多年。