Usages of a ferrugem
A ferrugem poderia ter destruído a chapa.
The rust could have destroyed the sheet metal.
Eu tive um problema, por isso deveria ter tirado a ferrugem.
I had a problem, so I should have removed the rust.
Se tivesses tirado a ferrugem, eu poderia ter soldado o pedal.
If you had removed the rust, I could have welded the pedal.
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