a flu bug的用法和样例：
- A flu bug.
- Speculating on Wall Street today probably isn't going to make you a millionaire by tomorrow,but one trip to the gym can instantly fight off a flu bug,add some pep to your step,and get your creative juices flowing.
- A flu epidemic raged through the school for weeks.
- I caught a flu and had to lie in the bed.
- I got a flu and then lost my voice.
a flu bug的相关资料：