grindstone
n
1 stone shaped like a wheel, turned on an axle, against which one holds knives or other tools to sharpen them 砂轮.
2 (idm 习语) keep one's/sb's nose to the grindstone => nose1.
🗣️ 情景例句
OK.
好的。
Bees that have honey in their mouths have stings in their tails.
口蜜腹剑。
The captain of the Elkor ordered his men to salvage as much as possible from the wreck.