Coat the table - top with a thin layer of varnish.

把桌面涂上薄薄一层亮漆。

youdao

Still, many new cars now paint a layer of varnish... in this way, the surface bright, beautiful, can also protect the paint.

还有，现在许多新车都在油漆外层喷了一层清漆。这样，漆面光亮、好看，也能保护漆面。这种车，你可千万别烧包，去封什么釉。

youdao

This "horseshoe" was coated with varnish and a layer of copper wire was wrapped around it.

他把一根铁棒弯成了马蹄铁型，在马蹄铁上涂了清漆并在上面绕了一层铜导线。

youdao

It seems a layer of varnish added later to protect the work is in fact turning the yellow to a greyish-orange colour.

BBC: Van Gogh's Flowers In A Blue Vase damage seen in X-rays

He painted directly onto this surface, often in acrylics, sometimes brushing on a layer of darkening varnish before the paint cured.

FORBES: Masterpieces For Everyone? The Case Of The Socialist Art Forger Tom Keating [Book Excerpt]

The purpose was to determine not only what was in the samples in terms of atoms and molecules, but also the precise structures in the interface layer between the original paint and the varnish.

BBC: Van Gogh's Flowers In A Blue Vase damage seen in X-rays