单词	buttock
释义	buttockbuttock /ˈbʌt̮ək/ noun [countable usually plural] Etymology ETYMOLOGYbuttock Origin: Old English buttuc one of the fleshy parts of your body that you sit on
随便看	running jump running mate runny run-off runoff primary run-of-the-mill run-on sentence runt run-through run-up runway rupee rupiah rupture rural rural delivery rural free delivery rural route ruse rush rushed rush hour Rushmore, Mount Russell, Bertrand Russell, Bill

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