centrally acting adjuvant

例句：

1. 1. The new drug is designed to be centrally acting, meaning it will work best when administered directly into the bloodstream.
   这种新药设计为中央作用，意味着它最好直接注射到血液中。
2. 2. The research team found that the centrally acting adjuvant significantly improved the efficacy of the vaccine.
   研究团队发现，这种中央作用的辅助药物显著提高了疫苗的有效性。
3. 3. The centrally acting adjuvant was carefully tested for safety and effectiveness before being approved foruse in clinical trials.
   这种中央作用的辅助药物在用于临床试验之前，经过严格的安全性和有效性测试。