同根派生 mill stone相关词英汉例句We suggest sharpening on a wet stone because it cleans the pores of the sharpener dissipates frictional heat and facilitates smooth sharpening action.我们建议使用一块弄湿了的磨石，因为研磨液体能帮助清洁磨具上的孔，能散去摩擦产生的热量，还能使磨刀的动作更加顺滑。mill stone更多例句