mill stone

常見例句

• We suggest sharpening on a wet stone because it cleans the pores of the sharpener dissipates frictional heat and facilitates smooth sharpening action.
  我們建議使用一塊弄濕了的磨石，因?yàn)檠心ヒ后w能幫助清潔磨具上的孔，能散去摩擦產(chǎn)生的熱量，還能使磨刀的動(dòng)作更加順滑。
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