keyholen.钥匙孔；（篮球）罚球区adj.内幕的；偷偷打听的Keyhole phenonena栓孔效应Keyhole technique锁孔技术keyhole type notch钥匙式槽口keyhole craniotomy锁孔开颅术keyhole escutcheon钥匙孔罩keyhole approaches锁孔入路Keyhole neurosurgery锁孔神经外科keyhole-type notch钥匙式槽口keyhole shaped orifice钥匙孔形喷孔keyhole fading channel匙孔信道