polyvalent [ˌpɑ:liˈveɪlənt]

例句:

• Major treatment methods for arsenic include sulfide precipitation, or complexation with polyvalent heavy metals.
  砷的主要处理方法有硫化物沉淀法, 或与多价重金属络合.
  
• The test proved that the polyvalent inactivity vaccine is safe and effective.
  试验证明,该多价灭活疫苗安全性好,免疫效果确实.
  
• Influenza may be prevented by active immunization with a polyvalent killed or subunit vaccine.
  可以通过主动免疫接种多价灭活疫苗或亚单位疫苗预防流感.