telecommunication
US /ˌtel.ɪ.kə.mjuː.nɪˈkeɪ.ʃən/
UK /ˌtel.ɪ.kə.mjuː.nɪˈkeɪ.ʃən/

1.
电信, 通讯
communication over a distance by cable, telegraph, telephone, or broadcasting
:
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The company specializes in advanced telecommunication systems.
该公司专注于先进的电信系统。
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Modern life relies heavily on efficient telecommunication networks.
现代生活严重依赖高效的电信网络。