磨刀石 (mò dāo shí) — whetstone; grindstone

Definition

Examples

• 他用磨刀石把刀磨得很锋利。
  Tā yòng mò dāo shí bǎ dāo mó dé hěn fēng lì.
  He used a whetstone to sharpen the knife very sharp.
• 这块磨刀石用了很多年了。
  Zhè kuài mò dāo shí yòng le hěn duō nián le.
  This grindstone has been used for many years.
• 买一块好的磨刀石很重要。
  Mǎi yí kuài hǎo de mò dāo shí hěn zhòng yào.
  Buying a good whetstone is very important.