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

1.
電信, 通訊
communication over a distance by cable, telegraph, telephone, or broadcasting
:
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The company specializes in advanced telecommunication systems.
該公司專注於先進的電信系統。
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Modern life relies heavily on efficient telecommunication networks.
現代生活嚴重依賴高效的電信網絡。