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3D printer – n. a device that can manufacture objects in a way similar to how copies of documents are made
valve – n. a mechanical device that controls the flow of liquids
app (application)– n. a computer program
virtual reality – n. pictures and sounds created by a computer that are aimed at affecting a person's experiences and senses
translate – v. to change words from one language to another
cough – n. to force air through the throat making short loud noises, often because a person is sick
signature – n. signs that show a specific thing is present
contact tracing – n. to watch and record who a person has contact to discover the spread of disease
