cordon counts

例句：

1. 1. The city has cordoned off the area around the accidentsite for safety reasons.
   为了安全原因，该市已将事故现场周围的区域封锁。
2. 2. The government has cordoned offthe affected areas to prevent further spread ofthe virus.
   政府已封锁受影响地区以防止病毒进一步传播。
3. 3. The scientists cordonedoff the laboratory to investigate the cause ofthe outbreak.
   科学家们封锁了实验室以调查疫情的原因。