An end to grey hair and crows-feet could be just 10 years away after scientists showed it is possible to reverse ageing in animals.
科学家发现，动物的衰老过程有可能逆转。从此以后，可能仅需10年，人类就可以告别白发丛生，满脸皱纹的命运。
When you get older, crows' feet often form around your eyes.
你年纪大的时候，鱼尾纹常常会在你的眼周显现。
Now it’s this latter muscle that’s involuntary, so the crows feet smile is considered the real spontaneous emotion and is known now as the Duchenne smile.
现在发现眼轮匝肌的动作是无意识做出的，因此，带鱼尾纹的微笑被看成是情感的自然流露，誉为杜乡式微笑（发自内心的微笑）。
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