A Story on Mardi Gras的用法和样例：
- The annual Carnival season winds up on Mardi Gras, or Fat Tuesday, which is marked by parades and street parties through the city.
- I did a story on the condominium dweller's revolt at Golden sands.
- The major parades occur on Mardi Gras Day and the weekend before, and feature elaborate and colorful costumes and decorated floats.
- Our teacher usually tells us a story on Saturday morning.
- I thought I would look into doing a story on those radio shows.