most sweeping emissions trading system companies would have to buy permits for every ton of carbon they emit, a system designed to provide financial incentives for those that reduce their pollution.

VOA: standard.2009.05.03

Every advanced country in the world has a system that provides for this, including the United States, incidentally.

世界上每一个发达国家,顺便一提，包括美国在内，都有应对这些情况的制度。

耶鲁公开课 - 金融市场课程节选

Every advanced country in the world has a system that provides for this, including the United States, incidentally.

世界上每一个发达国家,顺便一提，包括美国在内，都有应对这些情况的制度。

耶鲁公开课 - 金融市场课程节选