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1. Oxford Dictionary

   work one's ass off

   • ph.
     work extremely hard
2. • 相關詞

   work one's ass (or butt) off

   • ph.
     work extremely hard

   Oxford Dictionary

   work one's ass (or butt) off

   • ph.
     work extremely hard

   Oxford American Dictionary

3. • 更多解釋

   work one's ass off

   • ph.
     work extremely hard

   Oxford American Dictionary