“磨快”造句

刀能在一块粗石上磨快.
Knives can be sharpened by grinding them against a rough stone.

“ 我去弄把刀子来,把钢板也磨磨快.
" I'll get another knife and have the spring ground.

他在磨石上磨快了他的刀刃.
He sharpened the edge of his knife on a grindstone.

• #磨快