The polio vaccine has saved millions of lives.
脊髓灰
炎
挽救了数以百万计的生命。
炎,小
麻痹症
;
;;The polio vaccine has saved millions of lives.
脊髓灰炎挽救了数以百万计的生命。
Children have been routinely immunized against polio since 1958.
自从1958 年以
，
都按照常规接种防治小麻痹症的。
She was struck down by polio at the age of four.
她四岁那年因小麻痺症死去。
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