运输安全管理局不能继续将资源分散到未被充分利用的预检通道，而同时，大多数旅客却要排着不必要的队。
The TSA cannot continue diverting resources into underused PreCheck lanes while most of the traveling public suffers in unnecessary lines.
南方没有更多的工业，铁路线也很少，南方不能像北方那样生产那么多的军事装备，而且南方的铁路运输也没有北方那么方便。
The South had much less industry and fewer railroads. It could not produce as much military equipment, and it could not transport supplies as easily as the North could.
不幸的是，由于运输的关系，天然气还不能轻而易举地取代石油。
Unfortunately, natural gas can't yet be easily substituted for oil for transportation.
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