Crossword Genius

People opposed to the enemy are in a rush (4,7,4)

Ross

I believe the answer is:

race against time

I'm a little stuck... Click here to teach me more about this clue!

'in a rush' is the definition.
I know nothing about this answer so I cannot tell whether this works.

'people opposed to the enemy' is the wordplay.
'people' becomes 'race' (people can mean a national group or race).
'opposed to' becomes 'against' (I've seen this before).
'the enemy' becomes 'time' (the enemy when speaking figuratively).
'race'+'against'+'time'='RACE AGAINST TIME'

'are' is the link.

Can you help me to learn more?

(Other definitions for race against time that I've seen before include "in a desperate situation" , "rushed job?" , "neck-and-neck situation" , "Sporting event that may be won by the enemy" , "rush to meet deadline?" .)

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