a liquid that is painted onto wood or paintings to protect the surface, or the hard shiny surface it produces when it dries

Polyurethane varnish provides a tough, scratch-resistant finish. 聚胺酯罩光漆可以形成一层坚硬防划的表面。

a final coat of (clear) varnish 最后一层清漆

to put varnish on a surface

They decided to spend the weekend varnishing their boat. 他们决定用周末的时间给他们的船上清漆。

to use nail varnish