unit 8

• to alert somebody = to warn somebody, to make somebody aware of
• to detect = to discover something not easily noticed
• embedded = in fixed into (the surface of) something
• recognition = the act of recognizing, knowing what something/someone is
• a heart rate = the number of heart beats per minute
• a household appliance = a piece of electrical equipment with a certain purpose in the home
• a malfunction / to malfunction = to not work properly, to be broken
• remotely = from a distance
• to require somebody to do something = to need someone to do something
• to revolutionize = to completely change something
• to snore = to breathe noisily during sleep
• a wearable = a device or gadget designed to be worn like clothing
• to decline = to decrease, to go down in number
• a decrease = the state of becoming smaller or less. "There was a decrease in the number of people living in poverty."
• dramatically = greatly or suddenly, a big change
• gradual = a slow change; a step-by-step change
• to grow slightly = to grow a little bit