environment, The place or conditions where people live, study, or work, affordable, Not too expensive; easy to pay for, interactive, Involving active participation, not just watching or listening, Headset. , A device you wear on your head with headphones and often a microphone or screen, used for listening, speaking, or seeing virtual images., virtual world , a computer-created environment that looks real and lets people move and interact inside it., simulation , an artificial copy of a real situation used for training, learning, or testing..

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