打磨 (dǎ mó): to polish; to burnish; to shine

This piece of jade still needs to be polished repeatedly before it can become smooth and translucent.

The surface of the newly bought wooden table was a bit rough, so he spent the whole afternoon polishing the tabletop.

After months of hard training, his public speaking skills were repeatedly polished, and he eventually won first place in the competition.

The craftsman carefully polished the silverware with fine sandpaper until it shone again.

To make her resume more attractive, she asked her teacher to help polish the wording and formatting.