名词
中文翻译：流感
同义词：
['influenza', 'typhoid', 'plague']
例句：
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1.He caught the flu last week and has been bedridden ever since.
他上周得了流感，从那以后一直卧床不起。
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2. The flu season is always a concern for many people.
流感季节总是让很多人感到担忧。
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3. Doctors recommend getting vaccinated against the flu every year.
医生建议每年都接种流感疫苗。