發(fā)音：[？nt？rste？t]作形容詞，意為：州際的;州與州之間的作名詞，意為：州際公路例如：We have roadblocks on every interstate.我們在每個州際間都設了路障。這里的interstate作形容詞表示州際間的。

His tracks were as straight as the interstate.他的蹤跡和州際公路一樣直。

這里的interstate作名詞表示州際公路。