士兵们在进入杀区前仔细检查了周围环境。

The soldiers carefully checked the surroundings before entering the ___kill-zone.

安全专家在隔离网络中创建了一个隔离区，专门用来追踪恶意软件的行为模式。

Security experts created a ___kill-zone in the isolated network to track malware behavior patterns.