is burning
A propósito, a sua moto ainda está queimando.
By the way, your motorcycle is still burning.
— Akira (1988)
E não percebeu que estava muito no sol, que está queimando?
And didn't he realize he was in the sun for too long, that he was burning?
— Dor e Glória (2019)
Parece que algo está queimando.
It seems like something is burning.