刀钝石上磨，人蠢没奈何。

A blunt knife may be sharpened on a stone, but if a man is stupid there is no help for his stupidity.

youdao

如果你试以刀砍石，你就会把刀刃弄钝。

If you try to cut stone with a knife, you will blunt the edge.

youdao

如果你试以刀砍石，你就会把刀刃弄钝。

If you try to cut stone with a knife, you will blunt the edge.

youdao