It won't grind down any finer than this.

不能磨得比这个再细了.

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The rice will grind down into flour.

这米要磨成粉.

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The exploiting classes resort to every possible means to grind down and exploit the labouring people.

剥削阶级用各种手段来压迫剥削劳动人民.

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Roll grinder a special lathe used to grind down or resurface rubber applicator rolls.

辊子打磨---特殊的车床用来磨去和涂布辊的表面.

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