словарь польский - английский
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sprawić komuś zawód на английском языке:
1. 
be a disappointment to sb
Английский слово "sprawić komuś zawód«(be a disappointment to sb) встречается в наборах:
słówka szkoła, rozszerzenie2. 
let down
The injured seaman was slowly let down the side of the ship on ropes, and into the waiting boat.
Never let down your best friend by breaking a promise
I need to let down my skirt; it's too short.
let Sb down 
make someone down 
let someone down 
be a disappointment to somebody 
to let down sb 