松弛的皮肤香烟中含有4000多种化学成分，其中大部分物质都会伤害人体的骨胶原和弹。

Sagging Skin There are more than 4,000 chemicals in tobacco smoke, and many.

youdao

松弛的皮肤香烟中含有4000多种化学成分，其中大部分物质都会伤害人体的骨胶原和弹。

Sagging Skin There are more than 4,000 chemicals in tobacco smoke, and many.

youdao