Operating system

//ˈɒpəˌɹeɪtɪŋ ˌsɪstəm//

Pronunciation

US //ˈɒpəˌɹeɪtɪŋ ˌsɪstəm//
US //ˈɑpəˌɹeɪtɪŋ ˌsɪstəm//

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