operating system
noun [ C ] uk/ˈɒp.ər.eɪ.tɪŋ ˌsɪs.təm/ us/ˈɑː.pə.reɪ.t̬ɪŋ ˌsɪs.təm/
(计算机的)操作系统
a set of programs that control the way a computer system works, especially how its memory is used and how different programs work together
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