形容词短语
中文翻译：非常干净
同义词：
['clean as a whistle', 'spotless', 'flawless']
例句：
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1.The room was as clean as a whistle after the cleaning crew finished.
清洁工完成之后，房间变得异常干净。
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2. He was so proud of his son's work that he said it was as clean as a whistle.
他为儿子的工作感到骄傲，说它就像吹口哨一样干净。
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3.The new carpet looks like it has been professionally cleaned and is as clean as a whistle.
新地毯看起来经过专业清洗，非常干净。