我们在公路旅行中沿着著名的66号公路行驶。

We drove along the famous ___Route 66 on our road trip.

走5号州际公路向北可抵达西雅图。

Take ___Interstate 5 north to reach Seattle.

美国20号公路是一条非常长的公路。

US ___Route 20 is a very long highway.