Chinese

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unload; take off
grindstone; to sharpen; to delay
grindstone; to sharpen; to delay; hardship; to grind; to rub
 
to kill; to murder; to slaughter donkey
trad. (卸磨殺驢)
simp. (卸磨杀驴)
Literally: “to kill the donkey the moment it is released of the millstone”.

Pronunciation

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Idiom

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卸磨殺驢

  1. (figuratively) to get rid of somebody, or something, or both, upon ceasing to be useful