a bit of paper的用法和样例：
- She inserted a bit of paper under the table leg.
- A bit of embrocation will soothe your bruised knee.
- Setting up this business was a bit of a gamble.
- The party was a bit of a damp squib.
- Don't rely on his memory he's a bit of a dreamer.
- The note was written on a scrappy bit of paper.