ADSL
noun [ U ] internet & telecoms specialized uk/ˌeɪ.diː.esˈel/ us/ˌeɪ.diː.esˈel/
非对称数字用户线路（asymmetric digital subscriber line的缩写）
abbreviation for asymmetric digital subscriber line: a system for providing a very fast internet connection that allows you to use a phone at the same time