flog/beat a dead horse
зря тратить силы, попусту стараться
I felt I was flogging a dead horse when I was trying to talk my friend out of the risky business.
Другие идиомы:
- ahead of the pack
- alley cat
- as awkward as a cow on roller skates
- as blind as a bat
- as busy as a beaver
- as clean as a hound's tooth
- as conceited as a barber's cat
- as crooked as a dog's hind leg
- as drunk as a skunk
- as fat as a pig
- as gentle as a lamb
- as gruff as a bear
- as hungry as a bear
- as innocent as a lamb
- as meek as a lamb