We need to put in fencing along highways and crossing structures over the highways.

我们需要沿高速公路立栅栏，安装跨越高速公路的穿越建筑。

Since then, more than 2 billion vehicles have crossed the world famous structure between San Francisco and Marin County, California. As many as 112,000 cars make the trip each day.

从那之后超过20亿辆机动车通过了这座世界知名的大桥。它位于加州，连接起旧金山和马林郡。每天车流量多达十一万两千。