例句與造句

1. While Saeed's teams had found 317, 482 children under the age five to receive the polio vaccine in three days of immunization last month in Helmand, local doctors and nurses had vaccinated only about 20 percent of that number for measles and diphtheria throughout the year.
2. It's difficult to find days of immunization in a sentence. 用days of immunization造句挺難的