To build its 44,000-mile web of highways, bridge and tunnels, hundreds of unique engineering designs and solutions had to be worked out.

为了建造长达4.4万英里的公路、桥梁和隧道网络，必须设计出数百种独特的工程设计和解决方案。

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To build its 44,000-mile web of highways, bridges, and tunnels, hundreds of unique engineering designs and solutions had to be worked out.

为了建造长达4.4万英里的公路、桥梁和隧道网络，必须设计出数百种独特的工程设计和解决方案。

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It is too late for us to be cheated by purely engineering solutions won at the expense of human comfort.

想用牺牲舒适性的纯工程的解决方法来糊弄我们，已经太迟了。

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"Right before finals, we have to study at work because we are running out of time, " says Sachin Wadhawan, a director of solutions engineering at Convio, about himself and his classmates in the McCombs School of Business E.

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Engineering solutions like fish ladders, water-velocity regulators, and careful site design can mitigate many of these concerns.

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But the problems can all be overcome through existing engineering solutions, if politics and economics can only change tack.

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