The idea was to connect the new system to existing expressways and freeways.
2018年6月四级真题（第二套）听力 Section C
柯林斯高阶英汉双解学习词典释义
N-COUNT
高速公路
An expressway is a wide road that is specially designed so that a lot of traffic can move along it very quickly. It is usually divided, so that traffic travelling in one direction is separated from the traffic travelling in the opposite direction.