介词短语
中文翻译：在
同义词：
['on pain of', 'at the risk of', 'in the event of']
例句：
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1. He promisedto help us if we could find a solution upon pain of losing our job.
如果我们能找到解决方案，他承诺会帮助我们，但条件是我们可能会失去工作。
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2.The company was forced to shut down due to financial difficulties upon pain of legal action.
由于财务困难，公司被迫关闭，否则将面临法律行动。
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3. If you fail to complete your assignments on time, you will be subject to severe consequences upon pain of losing your scholarship.
如果你不能按时完成作业，你将因失去奖学金而面临严重后果。