cordonnet

例句：

1. 1. The city has been cordoned off due to the outbreak of a new virus.
   由于新病毒的爆发，该城市已被封锁。
2. 2.The scientists cordoned off the affected area and began testing for the virus.
   科学家们封锁了受影响的区域并开始测试病毒。
3. 3.The government cordoned off the area around the hospital to prevent further spread of the disease.
   政府封锁了医院周围的区域以防止疾病的进一步传播。