示范答案：
Frankly speaking, I always wonder what makes the busy world leaders gather together and get engaged in the several-day-long conferences. Then I just guess crucial issues like world peace and development of the global economy would be the basis of their agendas.
One of the most famous international meetings that I know is the Global Climate Conference, which focuses on climate change and encourages different countries to do something to prevent the emergence of the extreme weather. Leaders may have disputes, and sometimes, no one would compromise, so they have to have meetings to negotiate and come up with an agreement.
