名词
中文翻译：无人机
同义词：
['remote control aircraft', 'drone', 'unmanned aerial vehicle (UAV)', 'remote-controlled aircraft']
例句：
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1.The drones circled above the city, surveying the landscape.
无人机在城市上空盘旋，俯瞰着城市景观。
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2. The pilot was instructed to fly the drone at a safe altitude.
飞行员被指示以安全高度飞行无人机。
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3. The drone's camera captured the moment of the rescue operation.
无人机的摄像头记录了救援行动的瞬间。