形容词
中文翻译：秘密的
同义词：
['secretive', 'clandestine', 'covert例句：1. The spy was so secretive that he never revealed his true identity.（这个间谍非常秘密，从不透露他的真实身份。）2. The covert operation went undetected by the enemy.（这个秘密行动没有被敌人发现。）3. The covert meeting took place in a remote location far from prying eyes.（这次秘密会议在一个远离好奇目光的偏远地点举行。）']
例句：
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1. The spy was so secretive that he never revealed his true identity.
这个间谍非常秘密，从不透露他的真实身份。
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2. The covert operation went undetected by the enemy.
这个秘密行动没有被敌人发现。
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3. The covert meeting took place in a remote location far from prying eyes.
这次秘密会议在一个远离好奇目光的偏远地点举行。