疾;
;A new outbreak of smallpox occurred in 1928.
1928 年爆发
新一轮
天花。
；牛痘；天花菌A new outbreak of smallpox occurred in 1928.
1928 年爆发新一轮天花。
The smallpox vaccine has saved many lives.
天花疫挽救
人生命。
In 1742 he suffered a fatal attack of smallpox.
1742 年，他染上致命天花。
Were you vaccinated against smallpox as a child?
你小时候打过天花疫吗？
Vaccination for smallpox is efficacious.
种牛痘防天花是有效。
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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