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词汇 脊髓灰质炎
分类 英语词汇 英汉例句词典
释义 Polio has been eradicated due to vaccination and herd immunity.通过疫苗接种和群体免疫,脊髓灰质炎已经被消灭了。The polio vaccine has saved millions of lives.脊髓灰质炎疫苗挽救了数以百万计的生命。All the children have been immunized against polio.所有儿童都接种了脊髓灰质炎疫苗。
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