a professional player的用法和样例：
- His life as a professional player started seven years ago.
- Then he gave up school the next year to concentrate as a professional player.
- It was his last act as a professional player and one that was widely criticized in France and abroad.
- Xin Li then joined the regional basketball team to become a professional player.
- Except Starcraft what do you like to do in your spare time? Are you happy to be a professional player?