harmfulness of smoking

• 吸烟危害

harmfulness of smoking的用法和样例：

例句

1. It is a fact that smoking is a danger to health.
   吸烟危害健康，这是事实。
2. Warnings about the dangers of smoking seem to have little impact on this age group.
   看来有关吸烟危害的警告对这一年龄组的人不起多大作用。