beat a dead horse
US /biːt ə dɛd hɔrs/
UK /biːt ə dɛd hɔrs/
1.
membuang-buang waktu, melakukan hal yang sia-sia
to waste effort on something that is no longer possible or cannot be changed
:
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Trying to convince him now is just beating a dead horse; he's made up his mind.
Mencoba meyakinkannya sekarang hanya membuang-buang waktu; dia sudah memutuskan.
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Let's move on to a new topic; we're just beating a dead horse with this argument.
Mari kita beralih ke topik baru; kita hanya membuang-buang waktu dengan argumen ini.