OAPEC

例句：

1. 1.OAPEC is a group of experts who work together to solve complex problems.
   OAPEC是一个由专家组成的团队，他们共同努力解决复杂的问题。
2. 2. The OAPEC summit was held in Beijing last year, where leaders discussed global issues.
   去年在北京举行的OAPEC峰会上，领导人讨论了全球性的问题。
3. 3. OAPEC has been working on a new project for the past few months, and it's expected to be completed soon.
   OAPEC在过去几个月一直在忙于一个新项目，预计很快就能完成。