专家说，将电动飞行技术引入商务飞行还是遥远的梦想。
Experts say bringing this technology to commercial air travel is a dream far in the future.
任何需要商务飞行或自证身份的美国人都得去机动车辆管理部门排队。
An American who wanted to fly commercially, or do anything else for which he needed to identify himself, would end up in a queue at the Department of Motor Vehicles.
世界最大的大型客机星期四从新加坡安全起飞，作为新加坡航空公司日常往返悉尼航班之一开始其拖延已久的首次商务飞行。
The world's biggest jumbo jet lifted off safely on Thursday from Singapore on its long-delayed first commercial flight, as part of Singapore Airlines' daily service to Sydney.
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