No special markers, no desktop computer, no webcams: All a user needs to interact with augmented magazines, newspapers or cereal boxes is a smartphone.

无需特殊标记，无需台式电脑，无需网络摄像头，用户只要拥有一部智能手机就可以与增强型的杂志、报纸和麦片盒进行互动。

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In some cases, the access path does not perform well at runtime if the statement contains host variables, parameter markers, or special registers.

某些情况下，如果语句包含主机变量、参数标记或特殊寄存器那么访问路径在运行时的性能不会很好。

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The default estimates chosen by the compiler are used for the special registers, global variables, or parameter markers.

编译器选择的默认评估值是用在特殊注册、全局变量或参数标记的。

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