慢速英语:Obama to Visit Cuba in March

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sponsor – n. someone who takes the responsibility for someone or something

communist – n. a person who believes in communism or is a member of a political party that supports communism

normalizing – v. to bring someone or something back to a usual or expected state or condition

sketchy – adj. likely to be bad or dangerous

Latin America – n. South America and North America south of the U.S.