depurge

例句：

1. 1. The company has been depurging its old systems to make way for newer ones.
   该公司一直在清理旧系统以腾出空间安装新的。
2. 2. The government is working hard to depurge the country of all illegal drugs.
   政府正努力彻底清除国内所有非法毒品。
3. 3. After the outbreak, the hospital had to depurge the patients' rooms to prevent further contamination.
   疫情爆发后，医院不得不清理病人的房间以防止进一步的污染。