In user mode, the executing code has no ability to directly access hardware or reference memory. Code running in user mode must delegate to system APIs to access hardware or memory.

在用户态，代码不具备直接访问硬件或者访问内存的能力，而必须借助操作系统提供的可靠的、底层的API来访问硬件或者内存。

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In user mode, the executing code has no ability to directly access hardware or reference memory. Code running in user mode must delegate to system APIs to access hardware or memory.

在用户态，代码不具备直接访问硬件或者访问内存的能力，而必须借助操作系统提供的可靠的、底层的API来访问硬件或者内存。

youdao