形容词
中文翻译：Unknown
同义词：
['stupid', 'foolish', 'clueless']
例句：
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1. She was completely clueless about the situation.
她对情况一无所知。
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2. He was so stupid that he left his keys at home.
他太愚蠢了，把钥匙落在家了。
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3. The child was too foolish to realize the danger.
这个孩子太愚蠢，没有意识到危险。