eradicant

例句：

1. 1. The disease was eradicated from the population after a successful vaccination campaign.
   经过一次成功的疫苗接种运动，这种疾病从人群中被根除了。
2. 2.The government has been working hard to eradicate poverty in this region.
   政府一直在努力工作，以根除该地区的贫困。
3. 3.The scientist used a new drug to eradicate the virus from the patient's system.
   科学家使用了一种新药来将病毒从病人的系统中根除。