VOA慢速英语:飓风"佛罗伦萨"威胁美国东海岸

Category 4 – n. The Saffir-Simpson Hurricane Wind Scale is a 1 to 5 rating based on a hurricane's sustained wind speed

forecast – n. prediction about what is expected to happen

stall – v. to stop making progress

impact – n. the effect a person, event, or situation has on someone or something

pinned – adj. held firmly in a certain position so as not to be able to move

pattern – n. particular way that something is often done or repeated

potential – adj. having or showing the capacity to become or develop into something in the future.