干线

This is the place where the three main arteries of West London traffic met.

这就是伦敦西部三条主要交的交汇处。

Vehicles often bunches on the big highways.

在公路上, 交往往十分。

The railway line comes to the airport.

道直达飞机。

The Trans-Canada highway is a federal responsibility.

横跨加拿大的交是由联邦政府管理的。