“操作系统”的英语表达是 "operating system",缩写为 "OS"。
例句:Windows, macOS, and Linux are all examples of operating systems.(Windows、macOS 和 Linux 都是操作系统的例子。)
The operating system manages hardware resources and provides services for applications.(操作系统管理硬件资源并为应用程序提供服务。)