無駄な骨折りの英語

lost labour

useless effort

of a person, having made great efforts in vain

go on a fool's errand

I have laboured in vain―laboured to no purpose―It was not worth the trouble.

It is not worth the trouble.

It is well worth the trouble.

All my efforts have come to naught.

I got nothing for my pains.

the condition of being a waste of effort

All my efforts have come to naught.

All my efforts have come to naught.

I have laboured to some purpose

I have laboured in vain.

All my efforts have come to naught.

I have not laboured in vain

I only got laughed at for my pains

It is only so much labour lost.

All my efforts have come to naught.

It will make your efforts tell.

Great pains but all in vain.

No pain, no gain.

All my efforts have come to naught―gone for nothing.

I wish you would exert yourself in my behalf―use your influence in my behalf.

All my efforts have come to naught

I wish you would exert yourself in my behalf―use your influence in my behalf.

It will end in a waste of labor.

All my effort went for nothing.

I will recompense you for your labours―pay you for your trouble.

This is a laborious task―a toilsome task―an arduous task―a tough job.