Common rail experience without one to explain (9)
I believe the answer is:
translate
'to explain' is the definition.
(I've seen this before)
'common rail experience without one' is the wordplay.
I cannot quite understand how this works, but
'one' could be 'an' (an apple is one apple) and 'an' is found within the answer.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for translate that I've seen before include "Switch language" , "shift" , "Convert" , "Explain" , "Change the language of (a text)" .)