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惊天魔盗团影评英语翻译基础四价流感疫苗pregnant>peluso>听录音
六级准考证中学生行为规范The four-valent flu vaccine is a vaccine designed to protect against four different strains of influenza virus. It is usually given as an injection into the muscle of the upper arm or thigh. The vaccine contains killed virus of the four different strains, so it cannot cau the flu.commonlaw
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