There was no firm evidence that abstinence - plus instruction protects against disease 并不存在可以表明不唯禁欲计划指导保护了参加试验者免受疾病侵扰的证据。
2.
The study reviews 39 scientific trials of abstinence - plus programs with the aim of preventing hiv infection 这项研究考察了关于防止艾滋病感染的不唯禁欲计划的39例试验。
3.
The new study finds that " many abstinence - plus programs appear to reduce short - term and long - term hiv risk behaviour among youth in high - income countries " 新的研究发现， “许多不唯禁欲计划似乎在高收入国家减少了短期和长期的艾滋病风险行为。 ”
