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1·As skin ages and loses its elasticity, the skin stops springing back to its line-free state, and these grooves become permanently etched on the face as fine lines and wrinkles.

当皮肤老化失去弹性的时候，面部线条就不太容易弹回到无痕状态，皮肤下的凹槽就会永久性的在你的脸上形成，变成细小的线条和皱纹。