名词中文翻译
中文翻译：研磨
同义词：
['crushing', 'crushing', 'grinding']
例句：
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1.The machine is designed to grind grains into flour.
这台机器被设计用来将谷物磨成面粉。
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2. The ground was soggy and the soil was hard to grind.
地面潮湿，土壤难以研磨。
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3. The farmer used a stone quern to grind his wheat into flour.
农民使用石磨来将他的小麦磨成面粉。