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1. The water granulator is used to grind grains into flour.
水磨机用于将谷物磨成面粉。
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2. The water granulator was the first machine invented for grinding grains.
水磨机是第一种被发明用来磨谷物的机器。
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3. The water granulator was used in ancient times to grind grains for food and fuel.
水磨机在古代被用来磨谷物作为食物和燃料。