Above all, the interstate system provides individuals with what they enrich most: personal freedom of mobility.

最重要的是，州际公路系统为个人提供了他们最富有的东西：个人行动自由。

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The interstate system links every major city in the United States. It also links the United States with Canada and Mexico.

州际公路除连接美国各主要城市外，也把美国与加拿大，墨西哥连接了起来。

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And between 1956 and 1992 America constructed the interstate system, among the largest public-works projects in history, which criss-crossed the continent with nearly 50, 000 miles of motorways.

1956至1992年间，美国建设了州际公路体系，与近50,000英里的高速公路交错成网，覆盖整个大洲，这也是有史以来最大的公共工程之一。

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The major work on the Interstate Highway System was completed around nineteen-ninety.

VOA: special.2010.01.11

They wanted the roads for their Army, just like the US Interstate system was originally created in case the Army needed to be moved across the country very quickly if the Soviets attacked.

只关注军队用路，就好像美国州际公路系统,原本是为了苏联攻击时,陆军能快速穿越国家而建的。

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The Interstate system was seen as the road to the future, representing prosperity and driving US economic growth by fostering mobility.

BBC: Killer on the road: why mass murderers haunt US highways

Look at the railroads, the canals, the interstate system, GPS, for example.

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In her book Killer on the Road, author Ginger Strand traces the link between the Interstate system and highway killers and describes the uneasy relationship Americans continue to have with their roads.

BBC: Killer on the road: why mass murderers haunt US highways