People in rich countries are undoubtedly familiar with the maxim that prevention is better than cure. But, given the ready availability of vaccines in developed countries, the focus of prevention efforts has shifted to changing cancer-causing lifestyles.
毫无疑问，发达国家的人们已非常明白预防优于治疗的道理。但是，由于发达国家疫苗已经获得了普及，对预防措施的关注已经移到了改变致癌生活方式上。