（ ）is a computer technology that headsets ，sometimes in combination With physical spaces or multi—projected environments，to generate realistic images ，sounds and other sensations that simulate a user's physical presence in a virtual or imaginary environme
（ ）is a computer technology that headsets ，sometimes in combination With physical spaces or multi—projected environments，to generate realistic images ，sounds and other sensations that simulate a user's physical presence in a virtual or imaginary environment.
A.virtual reality
