polio

例句：

1. 1. Polio is a seriousdisease that can cause paralysis.
   脊髓灰质炎是一种严重的疾病，可能导致瘫痪。
2. 2. The World HealthOrganization has been working to eradicate polio from the world.
   世界卫生组织一直在努力从世界上根除脊髓灰质炎。
3. 3. Children who are not vaccinatedagainst polio are at risk of developingit.
   未接种脊髓灰质炎疫苗的儿童有患此病的风险。