短语
中文翻译：万一
同义词：
['in the event of', 'in the event of a', 'in case of an']
例句：
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1. In case of emergency, we need to have our phones with us at all times.
万一发生紧急情况，我们需要随时带着手机。
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2. In case of a fire, it's important to know how to escape quickly.
万一发生火灾，知道如何迅速逃生很重要。
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3. In case of a sudden drop in demand for our product, we need to be prepared to adjust our production accordingly.
如果我们的产品突然需求下降，我们需要准备好相应地调整生产。