例句與造句

1. Conclusions : universal hbv vaccination provides long - term protection up to 20 years , and a universal booster is not indicated for the primary hbv vaccinees before adulthood
   結論：乙肝疫苗的普及帶來20多年的長久保護，并且普及增強疫苗不適用于成年之前已接種過疫苗者。
2. It's difficult to find vaccinee in a sentence. 用vaccinee造句挺難的