VOA慢速英语:Trump, Sanders Spar Over Rally Violence

rally – n. a public meeting to support or oppose someone or something

disrupted – v. to interrupt the normal progress or activity of something

escorted – v. going with someone or something to give protection or guidance

assault – n.  the crime of trying or threatening to hurt someone physically

primary elections – n.  an election in which members of the same political party run against each other for the chance to be in a larger and more important election