knuckles 是 knuckle 的複數knuckleKK [ˋnʌkəl] /ˈnʌkəl/名詞1指關節、指節He cracked his knuckles before starting to type.他開始打字前先把手指關節按得喀喀作響。2蹄膀、腿肉指食材The restaurant is famous for its roasted pork knuckle.那家餐廳以烤豬腳聞名。動詞1用指關節按、揉She knuckled her tired eyes and yawned loudly.她用指關節揉了揉疲憊的雙眼,大聲打了個呵欠。片語動詞1認真做、發憤knuckle downYou need to knuckle down and finish the report tonight.你今晚得認真一點,把報告寫完。2屈服、讓步knuckle underThe union refused to knuckle under to management's threats.工會拒絕向資方的威脅屈服。