The Organization of Petroleum Exporting Countries (OPEC) is an international organization of eleven developing countries that are dependent on crude oil exports for their national economies.
The Organization of Petroleum Exporting Countries (OPEC) is an international organization of eleven developing countries that are dependent on crude oil exports for their national economies.
石油输出国组织（OPEC）是由11个依赖原油出口为国家经济的发展中国家组成的国际性组织。