To flog a dead horse
Стегать мертвую лошадь (т. е. заниматься явно бесполезным делом).
Голую овцу стричь. Мертвого лечить.
Другие пословицы:
- If the sky falls, we shall catch larks
- One scabby sheep will mar a whole flock
- A fox is not taken twice in the same snare
- The mountain has brought forth a mouse
- Little pigeons can carry great messages
- Dogs that put up many hares kill none
- Each bird loves to hear himself sing
- When pigs fly
- Many a good cow has a bad calf
- Don't look a gift horse in the mouth
- When the fox preaches, take care of your geese
- A close mouth catches no flies
- Fish and company stink in three days
- You can take a horse to the water but you cannot make him drink
- A curst cow has short horns