VOA慢速英语:Nobel Prize Winners Studied Agreements Affecting Everyone(翻译)

principal – n. a person or group who has responsibility as a guarantor of something such as payment

contribution – n. something that is done to cause something to happen

agent – n. someone acting on behalf of someone else

incentive – n. a reason to do something

deductible – n. an amount of a claim not paid by an insurance company

negatively – adv. badly; poorly

specific – adj. special or particular