在思想建设上，这一点体现得尤为鲜明。
GetArg[A, B, Literal[0]] == C
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How to get more iPhone storage almost immediately - 8 simple ways (and most are free)
Юлия Мискевич (Ночной линейный редактор)
The 386 supports four privilege rings (0 through 3), though in practice nearly all operating systems use just two: ring 0 for the kernel and ring 3 for user programs. Three privilege levels interact on every segment access: CPL (Current Privilege Level), DPL (Descriptor Privilege Level), and RPL (Requested Privilege Level).