慢速英语:Will Synthetic Vaccine Stop Polio?
日期:2015-02-23
Words in This Story
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oral vaccine –n. a vaccine that is taken by mouth, like the polio vaccine
synthetic –adj. not natural, made by combining different substances
technique – n. a way of doing something, or making something, by using special knowledge or skill
microbe – n. an extremely small living thing that can only be seen with a microscope, (like a virus)
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