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  • vaccinations造句

    Uganda began wide spread child vaccinations against HIB Hib in 2002.在2002年乌干达开始广泛地使用针对Hib的疫苗接种.Schools could also be used that's as places to give flus vaccunationsflu vaccinations.学校也可作为播种流感疫苗的地点.I read some public...