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

这就是伦敦西部三条主干线的汇处。

Vehicles often bunches on the big highways.

在干线公路上, 往往十分拥挤。

The railway line comes to the airport.

铁道干线直达飞机。

The Trans-Canada highway is a federal responsibility.

横跨加拿大的干线是联邦政府管理的。