releasing agent

例句：

1. 1. The drug is a releasing agentthat helps to relieve pain.
   这种药物是一种释放剂，有助于缓解疼痛。
2. 2. The new vaccineuses a releasing agent to prevent the virusfrom spreading.
   新疫苗使用一种释放剂来防止病毒传播。
3. 3. The scientist discovered a newreleasing agent that could be used in cancertreatments.
   科学家发现了一种新的释放剂，可以在癌症治疗中使用。