This year, we celebrate the 50th anniversary of the interstate highway system, that coast-to-coast network of roads envisioned by President Dwight D. Eisenhower in the 1950s. While his vision was ambitious -and had national defense ramifications -I don't think the good general could ever have imagined what has evolved in the past half-century. Yes, the 50th anniversary of the interstate highway system is cause to pause and mark the occasion. But let's not get too happy.
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机译：今年，我们庆祝州际公路系统问世50周年，这是总统怀特·D·艾森豪威尔（Dwight D. Eisenhower）于1950年代所设想的沿海到沿海公路网。尽管他的愿景雄心勃勃-并且在国防方面产生了分歧-我认为这位将军无法想象在过去半个世纪中发生了什么变化。是的，州际公路系统成立50周年引起人们的注意和纪念。但是，让我们不要太高兴。
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