名词
中文翻译：未定名的
同义词：
['unknown', 'uncertain', 'unidentified']
例句：
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1. The scientist is still unsure about the cause of the disease.
科学家仍然不确定这种疾病的原因。
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2. The team was unable to identify the culprit behind the robbery.
团队无法确定抢劫背后的罪犯。
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3. The researchers are still toosendanin about the results of their experiment.
研究人员对他们实验的结果仍然不确定。