VOA慢速英语:美国再次对伊朗核计划施加全面制裁

sanction –n. measure put in place to cause a country to obey international law, usually by limiting or banning trade

entities –n. a group that exists by itself that is separate from others

crumble –v. to break down completely

re-impose –v. to cause something such as a rule or punishment to again affect a person, group or country