catastrophic – adj. causing a lot of suffering or destruction
concentrator – n. a device to reduce the size of a substance and make it stronger
challenge – n. a difficult task or problem
transformer – n. a device that changes the characteristics of an electrical current
definitely – adv. without any question or doubt
ventilator – n. a machine that helps a person breathe
engage – v. to become involved in, or have contact with, someone or something
impact – n. a powerful effect something has on a person or situation
