VOA慢速英语:成功人士用风暴征服世界

flip – v. to change from one state, position, subject, etc., to another

hunker down – phrasal verb to lower the body to the ground by bending the legs : to stay in a place for a period of time to remain safe

degree – n. a step or stage in a process, course, or order of classification

column – n. something that is tall and thin in shape