Hxen.com's tips：Every day persisted can learn English well!-->■Learn English Everyday■
pandemic - n. an occurrence in which a disease spreads very quickly and affects a large number of people over a wide area or throughout the world
pneumonia - n. a serious disease that affects the lungs and makes it difficult to breathe
lockdown - n. a requirement for people to stay where they are, usually due to risks to themselves or to others if they move freely
transmit - v. to cause (a virus, disease, etc.) to be given to others
resident - n. someone who lives in a particular place
park - n. a piece of public land in or near a city that is kept free of houses and other buildings and can be used for pleasure and exercise
replace - v. to be used instead of (something)
