动词短语
中文翻译：闻出老鼠
同义词：
['detect', 'catch a whiff of something']
例句：
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1. He smelled a rat and knew that there was something fishy about the deal.
他闻到了不对劲的味道，知道这笔交易有问题。
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2. The detective smelled a rat and followed the trail to the suspect's house.
侦探闻到了可疑的气味，跟随着线索来到了嫌疑人的家。
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3. The old woman smelled a rat and called the police to investigate.
老妇人闻到了不寻常的气味，叫来了警察进行调查。