Immunisation
n. 免疫(immunization)
🗣️ 情景例句
How did the accident happen?
事故是怎么发生的？
The athletes competed for the honor of their country.
选手们为了国家的荣誉而互相竞赛。
We're going to substitute a better item for number 3.
我们将以品质较好的来代替三号产品。