For example, if one partner often smiles in a particular way, the other is likely to copy it - so creating similar patterns of wrinkles and furrows on the face.

• 举个例子，如果伴侣中的一个人笑得很特别，而另一个（出于移情）常常模仿，那么他们的脸上就会有相似的皱纹和条纹。