Meaning: stop functioning, get upset, be reduced to smaller parts.
Significado: parar de funcionar, reduzir em pedaços menores.
My car broke down on the freeway.
I broke down crying when they told me the news.
The metal has broken down into rust.
Meu carro quebrou na rodovia
Eu caí no choro quando eles me contaram a notícia.
O metal se despedaçou de ferrugem