形容词
中文翻译：无人的
同义词：
['unmanned', 'unmanned', 'unmanned']
例句：
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1. The unmanned spacecraft landed safely on the moon.
无人航天器安全着陆在月球上。
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2. The unmanned submarine was able to navigate through the treacherous waters.
无人潜水艇能够穿越危险的水域。
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3. The unmanned drone was used for surveillance purposes.
无人机被用于监视目的。