流行性感冒

例句：

1. 1.I caught a cold last week, and it's been bothering me all week.
   我上周得了感冒，整个星期都很不舒服。
2. 2.The flu is spreading quickly this season.
   这个季节流感正在迅速传播。
3. 3. It's important to get vaccinated against the flu to prevent it from spreading.
   接种流感疫苗以防止其传播是很重要的。