English people finally translated Polish text (5)
I believe the answer is:
emend
'polish text' is the definition.
'emend' can be an answer for 'text' (I have seen 'Correct text ' mean 'emend' so perhaps 'text' could also mean 'emend'). I'm unsure of the 'polish' bit.
'english people finally translated' is the wordplay.
'english' becomes 'E' (abbreviation as in OED).
'people' becomes 'men' (men are people).
'finally' says to take the final letters.
The last letter of 'translated' is 'd'.
'e'+'men'+'d'='EMEND'
Can you help me to learn more?
(Other definitions for emend that I've seen before include "Modify" , "Correct/revise (a text)" , "Correct and improve the text" , "Improve by editing" , "Alter something written to correct errors" .)