Hxen.com's tips：Every day persisted can learn English well!-->■Learn English Everyday■
resident – n. someone who lives in a particular place
sock – n. a piece of clothing that is worn on your foot and that covers your ankle and sometimes the lower part of your leg
socioeconomic – adj. of, relating to, or involving a combination of social and economic factors
surge – v. to suddenly increase to an unusually high level
tremendous – adj. very large or great
