catch a cold

例句：

1. 1.She caught a cold last week and hasn't been feeling well.
   她上周感冒了，一直感觉不太好。
2. 2. I hope you won't catch a cold from the cold air outside.
   我希望你不会被外面的冷空气传染感冒。
3. 3.It's important to wash your hands before eating to avoid catching a cold.
   在吃饭前洗手以避免感冒是很重要的。