A non-profit professional organization的用法和样例：
- I worked for free for a non profit organization.
- The New York stock exchange was a non profit organization that was largely self supervising.
- Ullens Center for Contemporary Art (UCCA) is a non profit, comprehensive art center founded in Beijing by collectors Guy and Myriam Ullens in November 2007.
- Non profit - making organization is exempt from tax .
- We joined a professional organization for teachers.