有趣的身体部位

Arm walk arm in arm:to walk with each other's arminterlocked. 手挽手地走The pupils always walk arm in arm across the streetafter school. 小学生们放学后总是手挽手儿过街道。cost an arm and a leg:花大价钱的;极其昂贵的——想想看,某样东西价值一只胳膊一条腿,够贵了吧! The apartment cost him an arm and a leg. 买这套房子他可花了血本。Bone feel in one's bone(that):确信;确有把握——不是一般的相信,而是连骨头眼儿都这么认为。She felt in her bone that China must win the bid for applying for 2008 Olympic Games; sure enough, China won.