Hxen.com's tips：Every day persisted can learn English well!-->■Learn English Everyday■
lockdown – n. the shutting down of society to fight a contagious disease
confident – adj. having a feeling or belief that you can do something well or succeed at something
uNPRecedented – adj. never having happened before
quarantine – n. the period of time during which a person or animal that has a disease or that might have a disease is kept away from others to prevent the disease from spreading
tourism – n. the business of providing hotels, restaurants, entertainment, etc., for people who are traveling
