However, this is the first time a panel has been designed to be laid directly on top of existing roads and the first project to install the panels on public highways.
2017年12月四级真题（第二套）听力 Section A
Interstate highways connect just about every large and mid-sized city in the country.
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
（尤指城市间的）公路
A highway is a main road, especially one that connects towns or cities.