Hxen.com's tips：Every day persisted can learn English well!-->■Learn English Everyday■
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.
