Coupled with these factors is the loss of the complex interactions among the muscles that can change the route of airflow from nose to mouth.

与这些因素相结合的是肌肉之间复杂的相互作用的丧失，这种相互作用可以改变从鼻子到嘴的气流路线。

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A key discovery was that if the inside of the mask is smooth - even if the outside is bumpy with pores, a nose and other features - it will stretch over most faces and move with facial muscles.

最关键的发现是，如果面具内部平滑，即使外面的气孔，鼻子和其它部位凹凸不平，它也会在面部伸展，随着肌肉的伸缩而移动。

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Doctors lifted the jaw, nose, cheekbones, muscles, teeth and eyelids from a donor and placed it masklike onto the man.

医生从捐献者的面部取出了下巴、鼻子、颧骨、肌肉、牙齿、眼睑，然后做成面具状移植到男患者的脸上。

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