接种疫苗的成本合计约60万美元。The cost of the immunizations was about $600,000 all told.这种疫苗的问世是医疗保健领域的重大突破。The vaccine represents a quantum leap in healthcare.医疗工作者宣传关于接种疫苗的好处.Health workers spread the word about the benefits of immu...

“疫苗的”的英语可以翻译为：vaccinal，vaccine ...