无线缆设计
It does admit cabless trains will probably be on the network by 2020.
BBC: Driverless Tube trains: Is this the end for drivers?
cabless:
cab +? -less
英汉双解词典包含3185865条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。