动词短语
中文翻译：对
同义词：
['question', 'cast a shadow over', 'raise suspicions about']
例句：
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1. Thenew policy has cast doubt on the effectivenessof the old system.
新政策对旧系统的有效性提出了质疑。
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2. The sudden change inweather cast doubt on our plans for theweekend.
突如其来的天气变化对我们的周末计划产生了疑问。
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3. The report cast doubt on the accuracyof the data collected during the survey.
报告对调查期间收集的数据的准确性表示怀疑。