但由于四车道公路隧道的建设在国内尚处于起步阶段，有许多问题亟待研究。
This paper focuses on characteristics and progress in research of four lane road tunnel. Some key technological problems to be studied are pointed out.
我突然发现下面的一条小路，于是司机猛踩刹车，在一条新修的四车道高速公路中间停下来，我们去查看的时候，车就被扔在那。
When I spotted one of these down a side turning, the driver slammed on his brakes in the middle of a newly built four-lane highway, and simply abandoned his car while we got out to investigate.
结构由几个钢筋混凝土波浪状拱构成，支撑起一条四车道的公路。
The structure comprises several arching waves of reinforced concrete, which support a four-lane highway.
精灵一听，马上改口说：“你刚才说的那条高速公路是要两车道还是四车道？”
To this the genie responds, "Would you like that highway to have two lanes or four?"
该文介绍了苏嘉杭高速公路由四车道扩建为六车道的桥梁改造设计。
The article introduces the bridge rebuilding design of Sujiahu Expressway to be extended from four lanes to six lanes.
本方法可以完成双向四车道高速公路和城市道路的车辆计数和车辆速度检测。
This paper presents a method for vehicle speed detection based on computer vision and image processing.
给那些不知道M 25公路是什么的人做个解释：M25是英国最大的双向四车道的一条高速公路，但常常都挤了太多的车，因此走这条路回家要花我两个小时。
For those people who don't know about the M25, it is the biggest motorway in our country. There's always too much traffic on it with 4 lanes each way and it can take me over 2 hours to get home.
给那些不知道M 25公路是什么的人做个解释：M25是英国最大的双向四车道的一条高速公路，但常常都挤了太多的车，因此走这条路回家要花我两个小时。
For those people who don't know about the M25, it is the biggest motorway in our country. There's always too much traffic on it with 4 lanes each way and it can take me over 2 hours to get home.
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