笑一笑,十年少!!

直译：If you often smile, you will be ten years younger.
意译：The more you smile, the younger you are.

smile ten years younger
A smile can make you ten years younger.
A smile can take ten years off your age.
A smile can gain you ten more years of life.
smile will gain you ten more years of life
One laugh gives you ten years of youth.

smile a little smile, ( you will be ) ten years younger

Smiles, ten is young!

Young by smiles