;A new outbreak of smallpox occurred in 1928.
1928 年爆发了新一轮的天花。
；牛痘；天花菌A new outbreak of smallpox occurred in 1928.
1928 年爆发了新一轮的天花。
The smallpox vaccine has saved many lives.
天花疫挽救了许多人的生命。
In 1742 he suffered a fatal attack of smallpox.
1742 年，他染上了致命的天花。
Were you vaccinated against smallpox as a child?
你小时候打过天花疫吗？
Vaccination for smallpox is efficacious.
种牛痘防天花
有
的。
Vaccination immunizes people against smallpox.
种牛痘能使人免患天花。
Cases of smallpox are becoming rare.
天花病例日益罕见。
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