最終更新日：2024/07/31
(slang, Canada, US, vulgar) To work very hard, to put in a lot of effort. / (slang, vulgar) To hurt or beat up.
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bust one's ass
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(slang, Canada, US, vulgar) To work very hard, to put in a lot of effort. / (slang, vulgar) To hurt or beat up.
bust one's ass
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