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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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.

一个重大发现就是如果面具内部是光滑的，即使毛孔，鼻子和其他容貌使外面凹凸不平，面具也会变形覆盖人脸并跟脸部肌肉一起运动。

youdao

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.

一个重大发现就是如果面具内部是光滑的，即使毛孔，鼻子和其他容貌使外面凹凸不平，面具也会变形覆盖人脸并跟脸部肌肉一起运动。

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