diphtheria and pertussis immunization

• 白喉； 百日咳免疫接种

diphtheria and pertussis immunization的用法和样例：

例句

1. The doctor immunized them against diphtheria.
   医生使他们免受白喉的威胁。
2. Diphtheria is a serious infectious disease.
   白喉是一种严重的传染病。