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They are immune from smallpox due to vaccination.
他们已经种痘，对天花有免疫力。
youdao
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I'm immune to smallpox as a result of vaccination.
我种过牛痘了，所以对天花有免疫力。
youdao
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I'm immune to smallpox as a result of vaccination.
我种过了牛痘，所以对天花有免疫力。
youdao
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I'm immune to smallpox as a result of vaccination.
我种过了牛痘，所以对天花有免疫力。
youdao