The first undersea tunnel in northern China has opened to traffic.

我国北方第一条海底隧道通车。

The airport is expected to open to traffic around the end of June this year.

预计该机场将于今年6月底左右开放。

The Brooklyn Bridge finally opened to traffic in 1883.

布鲁克林大桥终于在1883年通车。

As of the end of last year, China had built 117,000 kilometers of national expressways and seen 257,700 kilometers of national highways open to traffic.

截至 2021 年底，中国国家高速公路已建成 11.7 万公里，普通国道通车里程 25.77 万公里。