Definition
- C2
to restrict access to a location or structure, typically due to safety concerns
隔離；封閉
The police sealed off the accident scene to ensure that no unauthorized personnel could enter.
警察封鎖了事故現場，以確保未經授權的人員無法進入。
When a chemical leak was discovered, the staff immediately sealed off the area to prevent contamination from spreading.
當發現化學洩漏時，工作人員立即封鎖了該區域，以防止污染擴散。
The construction crew sealed off the passage for repairs.
施工人員封鎖了通道進行維修。