;
苗;Vaccination for smallpox is efficacious.
种牛痘防
是有效的。
苗；牛痘苗；菌苗病
Vaccination for smallpox is efficacious.
种牛痘防是有效的。
Smallpox can be contained by vaccination.
种牛痘苗可以控制住。
A new outbreak of smallpox occurred in 1928.
1928 年爆发了新一轮的。
Were you vaccinated against smallpox as a child?
你小时候打过苗吗？
The smallpox vaccine has saved many lives.
苗挽救了许多人的生命。
Cases of smallpox are becoming rare.
病例日益罕见。
In 1742 he suffered a fatal attack of smallpox.
1742 年，他染上了致命的。
Were you vaccinated against smallpox as a child?
你小时候打过苗吗？
A new outbreak of smallpox occurred in 1928.
1928 年爆发了新一轮的。
In 1742 he suffered a fatal attack of smallpox.
1742 年，他染上了致命的。
Smallpox can be contained by vaccination.
种牛痘苗可以控制住。
Cases of smallpox are becoming rare.
病例日益罕见。
Vaccination immunizes people against smallpox.
种牛痘能使人免患。
Vaccination for smallpox is efficacious.
种牛痘防是有效的。
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