基本解释未接种的同根派生 英汉例句Moreover, the vaccinated children showed no more cases of intussusception than did nonvaccinated children. 再者，接种疫苗者的肠套叠病例，并不比未接种疫苗者来得高。extra-incidence rate in nonvaccinated(groups) 未接种组的额外病率