慢速英语:美国向其他国家提供核废料技术

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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