正如电话曾与个人电脑、服务器以及网络有所不同，安全及报警系统也被视为与IT完全不同。

Just as telephones used to be differentiated from PCs, servers, and networks, so did security and alarm systems used to be viewed as wholly separate from it.

youdao

正如电话曾与个人电脑、服务器以及网络有所不同，安全及报警系统也被视为与IT完全不同。

Just as telephones used to be differentiated from PCs, servers, and networks, so did security and alarm systems used to be viewed as wholly separate from it.

youdao