The study demonstrates only an association between bone density and skinwrinkling, stressed Pal, the study's principal investigator. However, she called their findings noteworthy.
Pal强调说虽然她们的研究只是说明了骨骼密度与皮肤皱纹间的联系，但她认为她们的发现很值得关注。
3
The more cigarettes you smoke and the longer you smoke, the more skinwrinkling you're likely to have - even though the early skin damage from smoking may be hard for you to see.