名词
中文翻译：无人驾驶飞机
同义词：
['unmanned aircraft', 'unmanned vehicle', 'unmanned drone']
例句：
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1. The unmanned glider was used to survey the area before construction began.
在施工开始之前，使用无人飞行器进行了区域勘察。
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2. The unmanned glider successfully completed the mission and returned safely.
无人飞行器成功地完成了任务并安全返回。
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3. The unmanned glider was equipped with advanced sensors that allowed it to detect obstacles in real-time.
无人飞行器配备了先进的传感器，能够实时检测障碍物。