VOA慢速英语:科学家称今年二氧化碳含量将上升

emissions – n. a material that is given off or released

party – n. a person, group of country taking one side of an issue or dispute

decline – v. to go down, to be reduced in number or amount

convention – n. a formal agreement between two or more groups

greenhouse gases – n. a group of gasses that trap heat and are linked to increased temperatures in the atmosphere including carbon dioxide and methane

dominant – adj. more important, the most common