Some of the early colonists were cruel to the native population.有些早期移居殖民地的人对当地居民很残忍.The apple was brought over here by the colonists when they came.苹果是早期殖民地开拓者来的时候带过来的。Such colonists would be liable to modification, the ...
其实轮状病毒主要是通过粪-口途径传播的.Actually the annular virus is mainly through the fecal oral route dissemination.轮状病毒分许多不同的病毒株.There are many different strains of rotavirus.在预防腹泻方面, 报告建议轮状病毒和风疹疫苗均接种.Tohelp prevent diarrhea, the repor...