形容词
中文翻译：无飞行员的
同义词：
['unmanned', 'unpiloted']
例句：
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1.The aircraft was pilotless when it crashed.
飞机坠毁时是无人驾驶的。
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2. The spacecraft had to be pilotless to reach the destination.
为了到达目的地，宇宙飞船必须无人驾驶。
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3.The drone was pilotless, so it could fly anywhere without human control.
无人机是无人驾驶的，所以它可以在没有人为控制的情况下飞行任何地方。