例如，波音已经开发了一款名为“幽灵之眼”的氢动力无人飞行器，它能够在20000米(66000英尺)高空连续飞行四昼夜。
Boeing, for one, has a hydrogen-powered UAV called the Phantom Eye that will fly for four days at 20,000 metres (66,000 feet).
例如，波音已经开发了一款名为“幽灵之眼”的氢动力无人飞行器，它能够在20000米(66000英尺)高空连续飞行四昼夜。
Boeing, for one, has a hydrogen-powered UAV called the Phantom Eye that will fly for four days at 20, 000 metres (66, 000 feet).
她慢慢地一笑，然后大摇大摆地从她丈夫身边穿过，仿佛他只是个幽灵，走过来跟汤姆握手，两眼直盯着他。
She smiled slowly and, walking through her husband as if he were a ghost, shook hands with Tom, looking him flush in the eye.
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