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新东方-柯林斯雅思备考词典
firewall
英 [ˈfaɪəwɔːl]
[NOUN]
firewalls
1. [C 可数名词] （网络）防火墙
A firewall is a computer system or program that automatically prevents an unauthorized person from gaining access to a computer when it is connected to a network such as the Internet.
双语例句
例：New technology should provide a secure firewall against hackers.
新技术应该提供一个安全的防火墙以防御黑客。