柯林斯词典underpass /ˈʌndəˌpɑːs/ (underpasses) 1. N-COUNT An underpass is a road or path that goes underneath a railway or another road. (铁路、公路等下的)下穿通道 The underpass was closed through flooding. 下穿通道在洪水期被封闭。 返回 underpass剑桥词典a road or path that goes under something such as a busy road , allowing vehicles or people to go from one side to the other 地下通道 返回 underpass