“安全通信”常见的英文表达是 secure communication 。
例如:
Secure communication is crucial for protecting sensitive information during online transactions.(安全通信对于保护在线交易中的敏感信息至关重要。)
The military relies on secure communication channels to convey classified orders.(军队依靠安全的通信渠道来传达机密指令。 )