a charity gala的用法和样例：
- At Nanjing Road's Century Plaza, crowds of people joined in a New York Times Square-style countdown and a charity gala held to support the Special Olympics, which is scheduled for Shanghai in October.
- She went collecting for a charity.
- They solicited for contributions to a charity.
- They are organizing a charity dinner.
- Will you sponsor me for a charity walk I'm doing?
- The bands have linked up for a charity concert.