例句 /

A large multicenter vaccine trial showed a consistent decrease in hospitalizations and emergency department (ED) visits for gastroenteritis caused by rotavirus (RV).

A large multicenter vaccine trial showed a consistent decrease in hospitalizations and emergency department (ED) visits for gastroenteritis caused by rotavirus (RV).

一个大规模的多中心疫苗试验显示由轮状病毒引起的住院和急诊胃肠炎病人均明显较少。