go through the mill
US /ɡoʊ θruː ðə mɪl/
UK /ɡoʊ θruː ðə mɪl/

1.
passar por maus bocados, passar por um calvário
to experience a difficult or unpleasant period of time, often involving hard work or suffering
:
•
He really went through the mill during his first year at the company.
Ele realmente passou por maus bocados durante seu primeiro ano na empresa.
•
After the divorce, she went through the mill emotionally.
Após o divórcio, ela passou por maus bocados emocionalmente.