lǎo / shī / fu / yòng / mó / shí / gàng / dāo / dāo / rèn / hěn / kuài / jiù / liàng / le

老师傅用磨石杠刀，刀刃很快就亮了。

The old master sharpened the knife with a whetstone, and the blade quickly became shiny.