[误] Daddy painted the desk with a layer of paint.

[正] Daddy painted the desk with a coat of paint.

注：layer 和 coat，虽然翻译成中文都是“层”，但用法却不同。如：Onions have layers(洋葱是一层一层的)，但涂上一层油漆却要用 coat。

A layer of smog settled over the city.

The cake has three layers.

These seeds must be covered with a layer of earth.

A layer of ice on the street.

You must put another coat of paint on this door.

Two coats of painting were needed to cover the old colour.

A coat of dust