但鉴于长长的等待购买名单和运输延迟，2季度iPad销量低于预期显然是供应所致，而非需求问题。
But given the long lines and shipping delays, the shortfall was clearly due to supply issues, not demand.
不过航空运输延迟和低效的主要原因还是过时的空中交通管制——一套依靠地面控制、反应迟缓的雷达站和不断重复的语音通讯建立起来的体系。
But delays and inefficiencies in air travel are due in large part to an outdated traffic-control system that still relies on slow, ground-based radar stations and repetitive voice communication.
廉价的劳动力可能会使中国的服装在美国具有竞争力，但是如果运输的延迟会占用营运资金，导致冬季大衣在春季到货，那么贸易就会失去优势。
Cheap labour may make Chinese clothing competitive in America, but if delays in shipment lie up working capital and cause winter coats to arrive in spring, trade may lose its advantages.
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