VOA慢速英语:美国向其他国家提供核废料技术

source – n. a person, book, etc., that gives information

uranium – n. a radioactive element that is used to make nuclear energy and nuclear weapons

plutonium – n. a radioactive element that is used to make nuclear energy and nuclear weapons

priority – n. something that is more important than other things and that needs to be done or dealt with first

radioactive – adj. having or producing a powerful and dangerous form of energy