a chance meeting的用法和样例：
- A chance meeting decided my career.
- A chance meeting brought the two old friends together again.
- It was a chance meeting that would change my life.
- A chance meeting was the occasion of the renewal of their friendship.
- I had a chance meeting with your brother today; He seemed glad to see me.
- A chance meeting at a culinary conference led me to the answer when a recipe tester sat next to me and offered to test a few recipes for my book.