heptavalent怎么读，heptavalent什么意思，heptavalent短语和例句

1.A tetravalent meningococcal meningitis vaccine (licensed in the United States) and a heptavalent vaccine protecting against meningitis A and C (to be licensed in 2007);

一种四价流行性脑脊髓膜炎疫苗（已在美利坚合众国获许可证）和一种预防脑膜炎A和C的七价疫苗（将于2007年注册）；

2.A tetravalent meningococcal meningitis vaccine (licensed in the United States) and a heptavalent vaccine protecting against meningitis A and C (to be licensed in 2007);

一种四价流行性脑脊髓膜炎疫苗（已在美利坚合众国获许可证）和一种预防脑膜炎A和C的七价疫苗（将于2007年注册）；

3.A heptavalent vaccine protecting against meningitis A and C was licensed in 2007.

预防甲型和丙型脑膜炎的七价疫苗于2007年获得许可。