was covered in
Su cara estaba cubierta de lodo.
His face was covered in mud.
La escalera estaba cubierta de polvo y óxido.
The staircase was covered in dust and rust.
La máquina estaba cubierta de polvo.
The machine was covered in dust.
La mesa estaba cubierta de papel.
The table was covered with paper.
La camisa de Layla estaba cubierta de sangre.
Layla's shirt was covered in blood.