名词
中文翻译：流行性感冒同义词
同义词：
['influenza', 'flu']
例句：
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1. The flu season has just started, and we need to take extra precautions.
流感季节刚刚开始，我们需要采取额外的预防措施。
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2. Many people get the flu every year, but with proper hygiene, it can be prevented.
每年都有很多人感染流感，但只要保持良好的卫生习惯，就可以预防。
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3. This year's flu vaccine is more effective than last year's, so it's important to get vaccinated if youhaven't already.
今年的流感疫苗比去年更有效，所以如果你还没有接种，那么很重要的一点是要接种疫苗。