trivalent vaccine

例句：

1. 1.The trivalent vaccine is highly effective against the disease.
   这种三价疫苗对这种疾病非常有效。
2. 2. The trivalent vaccine has been shown to be safe and effective for children.
   这种三价疫苗已被证明对儿童是安全且有效的。
3. 3. The trivalent vaccine is recommended for individuals who have been exposed to the virus.
   这种三价疫苗推荐给那些已经暴露于病毒的人。