形容词
中文翻译：Unknown
同义词：
['uncanny', 'unrealistic', 'artificial']
例句：
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1. The painting was so unnatural that it made me feel uncomfortable.
这幅画太不自然了，让我感到不舒服。
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2. She looked at the clock and realized it was past midnight; she felt unnaturally awake.
她看了看表，意识到已经过了午夜；她感到异常清醒。
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3. The scientist found an unusually unnatural pattern in the data.
科学家在数据中发现了一个异常不自然的模式。