名词
中文翻译：Unknown
同义词：
['spy', 'spies', 'secret agent', 'secret observer']
例句：
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1. The spyplane was spotted by the enemy's radar system.
间谍飞机被敌方雷达系统发现。
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2.He is a famous spy who has been working for the government for many years.
他是一位著名的间谍，为政府工作了很多年。
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3.The spy was able to infiltrate the enemy's headquarters and gather important information.
间谍成功地渗透到敌人的总部并收集了重要的信息。