flog a dead horse Definition in the Cambridge English Dictionary
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Definition of “flog a dead horse” - English Dictionary

Definition of "flog a dead horse" - British English Dictionary

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flog a dead horse

UK informal (US informal beat a dead horse) to ​wasteeffort on something when there is no ​chance of ​succeeding: He ​keepstrying to get it ​published but I ​think he's ​flogging a ​deadhorse.
(Definition of flog a dead horse from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
Translations of “flog a dead horse”
in Chinese (Simplified) 做无用功,做徒劳无益的事…
in Chinese (Traditional) 做無用功,做徒勞無益的事…
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