antiprotozoan agent

例句：

1. 1.This antiprotozoan agent is effective against the parasites that cause diarrhea.
   这种抗原虫剂对引起腹泻的寄生虫有效。
2. 2. The researchers are developing a new antiprotozoan agent to combat the disease.
   研究人员正在开发一种新的抗原虫剂来对抗这种疾病。
3. 3.The antiprotozoan agent was tested on volunteers and found to be safe for human consumption.
   该抗原虫剂在志愿者身上进行了测试，并被证明对人类是安全的。