磨刀水是一个汉语词语，拼音是mó dāo shuǐ，意思是旧指农历五月十三日所下的雨。
他要磨刀、杀猪、捉鱼、腌鱼，还要去水动力磨坊磨荞麦，还要种土豆，并储存起来。
He sharpened the scythes on a grindstone, slaughtered a pig, caught and salted fish, ground barley in a water-driven grist-mill and grew and stored potatoes.
煮狗的水热起来之后，他们继续磨刀。
They continued getting their knives ready as the water to boil the dog heated up.
水可以阻止金属粒子渗入磨刀石并在上面形成金属层。
The water keeps the metal particles from becoming embedded in the stone and glazing its surface.
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