力透紙背刀背背叛背時耳背芒刺在背背後背道而馳背信背信棄義背眼背地背地裡違背背棄背離背面背篼背肌脊背背脊手背腳背背氣汗流浹背背手虎背熊腰擦背墊背背黑鍋背城借一背水一戰腹背受敵背負靠背背心汗背心赤背背帶背包
